{"product_id":"abb-07-dc-91-gjr5-2514-00-r0202-ac31-digital-i-o-module","title":"ABB 07 DC 91 GJR5 2514 00 R0202 AC31 Digital I\/O Module","description":"\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003eABB 07 DC 91 GJR5 2514 00 R0202\u003c\/strong\u003e, also recognized in engineering procurement databases as the \u003cstrong\u003e07DC91 GJR5251400R0202\u003c\/strong\u003e, is a dedicated decentralized digital input and output module designed for the Advant Controller 31 (AC31) automation system platform. Functioning as a remote station on the \u003cstrong\u003eCS31 system bus\u003c\/strong\u003e, this module enables efficient distributed binary signal collection and field device actuation. The unit provides full electrical isolation between the EIA RS-485 communication line and the internal electronics, suppressing electromagnetic noise and safeguarding system logic integrity in harsh industrial environments. Diagnostic verification is simplified via an onboard array of 33 LEDs that provide local status indication for signal channels and bus fault execution.\u003c\/p\u003e\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; padding-left: 20px;\"\u003e\n\u003cli\u003eIntegrates 16 dedicated binary inputs, 8 binary transistor outputs, and 8 software-configurable channels that operate dynamically as inputs or outputs.\u003c\/li\u003e\n\u003cli\u003eEstablishes robust distributed data links via the standardized EIA RS-485 CS31 system bus interface.\u003c\/li\u003e\n\u003cli\u003eEnsures continuous system reliability through comprehensive electrical isolation between the CS31 bus interface and the remaining circuitry.\u003c\/li\u003e\n\u003cli\u003eFeatures self-protecting transistor outputs equipped with automatic current limiting and thermal overload reactivation logic.\u003c\/li\u003e\n\u003cli\u003eIncorporates an internal varistor to execute effective de-magnetization during inductive load switching phases.\u003c\/li\u003e\n\u003cli\u003eSuppresses mechanical contact bounce via an optimized internal input hardware filter delay with a typical timing specification of 7 ms.\u003c\/li\u003e\n\u003cli\u003eStreamlines network deployment with an onboard hardware coding switch located under a protective slide cover for explicit station address mapping.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul style=\"list-style-type: square; padding-left: 20px;\"\u003e\n\u003cli\u003eDecentralized I\/O expansion for Advant Controller 31 Hardware 90 Series architectures.\u003c\/li\u003e\n\u003cli\u003eDistributed digital processing and binary status tracking in continuous manufacturing assembly blocks.\u003c\/li\u003e\n\u003cli\u003eLocalized field instrumentation and valve cluster control in industrial process environments.\u003c\/li\u003e\n\u003cli\u003eMulti-channel safety monitoring and signal routing panels facing heavy electromagnetic interference.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Data of the Complete Unit (07 DC 91)\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePermissible temperature range during operation\u003c\/td\u003e\n\u003ctd\u003e0...55 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated supply voltage\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated signal voltage for inputs and outputs\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. current consumption without load\u003c\/td\u003e\n\u003ctd\u003e0.15 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. rated load for supply terminals\u003c\/td\u003e\n\u003ctd\u003e4.0 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. power dissipation in module (outputs without load)\u003c\/td\u003e\n\u003ctd\u003e5 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax. power dissipation in module (outputs under load)\u003c\/td\u003e\n\u003ctd\u003e10 W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection against reversed polarity of power connection\u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor cross section (for removable connectors):\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- power input\u003c\/td\u003e\n\u003ctd\u003emax. 2.5 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- CS31 system bus\u003c\/td\u003e\n\u003ctd\u003emax. 2.5 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- signal terminals\u003c\/td\u003e\n\u003ctd\u003emax. 1.5 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of binary inputs\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of binary transistor outputs\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of configurable inputs and outputs\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference potential for all inputs and outputs\u003c\/td\u003e\n\u003ctd\u003eTerminals 24\/25 (minus pole of supply voltage, terminal M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of interfaces\u003c\/td\u003e\n\u003ctd\u003e1 CS31 system bus interface\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical isolation\u003c\/td\u003e\n\u003ctd\u003eCS31 system bus interface against the rest of the unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAddress setting\u003c\/td\u003e\n\u003ctd\u003eCoding switch under the slide cover located on the right side of the housing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDiagnosis\u003c\/td\u003e\n\u003ctd\u003eOperation and error messages: a total of 33 LEDs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Data of the Digital Inputs\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of channels per unit\u003c\/td\u003e\n\u003ctd\u003e16\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistribution of channels in groups\u003c\/td\u003e\n\u003ctd\u003e2 groups of 8 channels each, channels En.00...En.07, and En.08...En.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference potential for all inputs\u003c\/td\u003e\n\u003ctd\u003eTerminals 24\/25 (minus pole of supply voltage, terminal M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical isolation\u003c\/td\u003e\n\u003ctd\u003efrom CS31 system bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput delay\u003c\/td\u003e\n\u003ctd\u003etyp. 7 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignalization of input signals\u003c\/td\u003e\n\u003ctd\u003eone green LED per channel, LED activated according to the input signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput signal voltage:\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- 0 signal\u003c\/td\u003e\n\u003ctd\u003e24 V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- 1 signal\u003c\/td\u003e\n\u003ctd\u003e-6 V...+5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- residual ripple at 0 signal\u003c\/td\u003e\n\u003ctd\u003e+13 V...+30 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- residual ripple at 1 signal\u003c\/td\u003e\n\u003ctd\u003ewithin -6 V...+5 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- residual ripple at 0 signal\u003c\/td\u003e\n\u003ctd\u003ewithin +13 V...+30 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ci\u003eDue to the direct connection to the output, the demagnetizing varistor is also effective at the input when disconnecting inductive loads (see figure). This is why the difference between UPx and the input signal may not exceed the clamp voltage of the varistor. The varistor limits the voltage to approx. 36 V. Following this, the input voltage must range from -12 V to +30 V when UPx = 24 V and from -6 V to +30 V when UPx = 30 V. The following figure shows the circuit arrangement of a digital input\/output.\u003c\/i\u003e\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInput current per channel:\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- at 0 signal\u003c\/td\u003e\n\u003ctd\u003etyp. 7.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- at 1 signal\u003c\/td\u003e\n\u003ctd\u003e1.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- at +5 V\u003c\/td\u003e\n\u003ctd\u003e2.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- at +13 V\u003c\/td\u003e\n\u003ctd\u003e9.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- at +30 V\u003c\/td\u003e\n\u003ctd\u003e9.0 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor cross section (for removable connectors)\u003c\/td\u003e\n\u003ctd\u003emax. 1.5 mm² (grid space 3.81 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Data of Digital Outputs\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of channels per unit\u003c\/td\u003e\n\u003ctd\u003e8 transistor outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistribution of channels in groups\u003c\/td\u003e\n\u003ctd\u003e1 group of 8 channels (channels An.00...An.07)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReference potential for all inputs\u003c\/td\u003e\n\u003ctd\u003eTerminals 24\/25 (minus pole of supply voltage, terminal M)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommon voltage supply terminals for all outputs\u003c\/td\u003e\n\u003ctd\u003eTerminals 22\/23 (plus pole of supply voltage, terminal L+)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical isolation\u003c\/td\u003e\n\u003ctd\u003efrom CS31 system bus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignalization of output signals\u003c\/td\u003e\n\u003ctd\u003eone yellow LED per channel, LED activated according to output signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOutput current:\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- nominal value\u003c\/td\u003e\n\u003ctd\u003e500 mA at L+ = 24 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- maximum value\u003c\/td\u003e\n\u003ctd\u003e4 A total current per group\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- leakage current at 0 signal\u003c\/td\u003e\n\u003ctd\u003e\u0026lt; 0.5 mA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDe-magnetization during inductive load\u003c\/td\u003e\n\u003ctd\u003evia internal varistor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitching frequency with lamps\u003c\/td\u003e\n\u003ctd\u003emax. 0.5 Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection against short-circuit\/overload (electronic, limiting of output current to 7 A)\u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReactivation after short-circuit\/overload\u003c\/td\u003e\n\u003ctd\u003eafter approx. 100 ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eResistance to feedback against 24V signals\u003c\/td\u003e\n\u003ctd\u003eyes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTotal load current (including output current of configured inputs and outputs)\u003c\/td\u003e\n\u003ctd\u003emax. 8 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor cross section (for removable connectors)\u003c\/td\u003e\n\u003ctd\u003emax. 1.5 mm² (grid space 3.81 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eTechnical Data of Configurable Inputs and Outputs\u003c\/h3\u003e\n\u003cp\u003eThe configurable channels are defined individually by the user program as either inputs or outputs. This is done by reading or writing data to\/from the respective channel.\u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eNumber of channels per unit\u003c\/td\u003e\n\u003ctd\u003e8 inputs \/ transistor outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistribution of channels in groups (when using channels as inputs)\u003c\/td\u003e\n\u003ctd\u003e1 group of 8 channels (channels En+1.00...En+1.07)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDistribution of channels in groups (when using channels as outputs)\u003c\/td\u003e\n\u003ctd\u003echannels An.08, An.15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSignalization of input and output signals\u003c\/td\u003e\n\u003ctd\u003eone yellow LED per channel, LED activated according to binary signal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnical data when used as outputs\u003c\/td\u003e\n\u003ctd\u003erefer to digital outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTechnical data when used as inputs\u003c\/td\u003e\n\u003ctd\u003erefer to digital inputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eConnection to the CS31 System Bus\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInterface standard\u003c\/td\u003e\n\u003ctd\u003eEIA RS-485\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eElectrical isolation\u003c\/td\u003e\n\u003ctd\u003eagainst voltage supply, input and output\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConductor cross section (for removable 3-pole connector)\u003c\/td\u003e\n\u003ctd\u003emax. 2.5 mm²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eMechanical Data\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting to DIN rail\u003c\/td\u003e\n\u003ctd\u003eaccording to DIN EN 50022-35, 15 mm deep. The DIN rail is centrally positioned between upper and lower edges of the module.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMounting with screws\u003c\/td\u003e\n\u003ctd\u003eby 4 screws M4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWidth x height x depth\u003c\/td\u003e\n\u003ctd\u003e120 x 140 x 85 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eConnector\u003c\/td\u003e\n\u003ctd\u003eremovable connectors with screw-type terminals\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- conductor cross section\u003c\/td\u003e\n\u003ctd\u003emax. 2.5 mm² (grid space 5.08 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e- conductor cross section\u003c\/td\u003e\n\u003ctd\u003emax. 1.5 mm² (grid space 3.81 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e450 g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions for installation\u003c\/td\u003e\n\u003ctd\u003erefer to figure on next page\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eInstallation Instructions\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eInstallation position\u003c\/td\u003e\n\u003ctd\u003evertical with connectors pointing up and down\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling\u003c\/td\u003e\n\u003ctd\u003eThe natural convection cooling must not be hindered by cable ducts or other additional components installed in the cabinet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eOrdering Data\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003eAttribute\u003c\/th\u003e\n\u003cth\u003eValue\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModule 07 DC 91\u003c\/td\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eScope of delivery\u003c\/td\u003e\n\u003ctd\u003eOrder No. GJR5251 14 00 R0202\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003eDigital Input\/Output module 07 DC 91\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e24 V DC; 8 inputs \/ 8 transistor outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e13-pin connector (grid space 5.08 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e \u003c\/td\u003e\n\u003ctd\u003e9-pin connectors (grid space 3.81 mm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eField Installation and Commissioning Notes\u003c\/h3\u003e\n\u003cp\u003eIn most Advant Controller 31 systems, installation of the ABB \u003cstrong\u003e07 DC 91\u003c\/strong\u003e (07DC91) is straightforward. However, commissioning issues are usually caused by incorrect address settings, communication wiring faults, or field wiring errors rather than module failure.\u003c\/p\u003e\n\u003ch4\u003eBefore Applying Power\u003c\/h4\u003e\n\u003cp\u003eBefore energizing the module, experienced field engineers typically verify three items first:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e24 VDC supply polarity and voltage level\u003c\/li\u003e\n\u003cli\u003eCS31 bus wiring continuity\u003c\/li\u003e\n\u003cli\u003eNode address setting on the coding switch\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eMany communication faults reported during startup are eventually traced to duplicate CS31 addresses or reversed communication wiring.\u003c\/p\u003e\n\u003ch4\u003eInitial Power-Up Check\u003c\/h4\u003e\n\u003cp\u003eWhen power is applied, all LEDs should illuminate briefly while the module performs internal initialization.\u003c\/p\u003e\n\u003cp\u003eIf several LEDs fail to light during startup, check the power supply and connector seating before investigating network communication.\u003c\/p\u003e\n\u003cp\u003eOnce initialization is complete:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eThe communication LED should stop flashing.\u003c\/li\u003e\n\u003cli\u003eInput LEDs should reflect actual field signals.\u003c\/li\u003e\n\u003cli\u003eOutput LEDs should respond to controller commands.\u003c\/li\u003e\n\u003cli\u003eThe red fault LED should remain OFF.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eCS31 Communication Verification\u003c\/h4\u003e\n\u003cp\u003eA continuously flashing communication LED is one of the most common commissioning issues encountered in the field.\u003c\/p\u003e\n\u003cp\u003eBefore replacing the module, engineers should verify:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eCorrect node address assignment\u003c\/li\u003e\n\u003cli\u003eCS31 bus polarity\u003c\/li\u003e\n\u003cli\u003eRS-485 cable integrity\u003c\/li\u003e\n\u003cli\u003eController configuration\u003c\/li\u003e\n\u003cli\u003eBus termination condition\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIn most cases, communication faults originate from network configuration rather than hardware failure.\u003c\/p\u003e\n\u003ch4\u003eOutput Circuit Testing\u003c\/h4\u003e\n\u003cp\u003eDuring commissioning, outputs should be tested one channel at a time under actual load conditions.\u003c\/p\u003e\n\u003cp\u003eIf an output energizes briefly and then switches off, inspect the field device current draw. An overload or short circuit can activate the module's electronic protection circuit, causing automatic shutdown and restart attempts.\u003c\/p\u003e\n\u003cp\u003eRepeated output cycling is often a wiring problem rather than a defective output channel.\u003c\/p\u003e\n\u003ch4\u003eTroubleshooting a Red Fault LED\u003c\/h4\u003e\n\u003cp\u003eIf the red fault LED remains active, review recent field wiring changes before replacing the module.\u003c\/p\u003e\n\u003cp\u003eCommon causes include:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eShort-circuited solenoid valves\u003c\/li\u003e\n\u003cli\u003eDamaged field cables\u003c\/li\u003e\n\u003cli\u003eOutput overload conditions\u003c\/li\u003e\n\u003cli\u003eIncorrect terminal wiring\u003c\/li\u003e\n\u003cli\u003eCS31 communication faults\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe diagnostic memory remains active until the fault has been corrected and acknowledged.\u003c\/p\u003e\n\u003ch4\u003eModule Replacement in Existing Systems\u003c\/h4\u003e\n\u003cp\u003eWhen replacing a failed 07 DC 91 (07DC91), always record the address switch setting before removing the original module.\u003c\/p\u003e\n\u003cp\u003eAfter installation of the replacement unit:\u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eVerify address switch settings.\u003c\/li\u003e\n\u003cli\u003eConfirm 24 VDC supply voltage.\u003c\/li\u003e\n\u003cli\u003eCheck CS31 communication status.\u003c\/li\u003e\n\u003cli\u003eVerify all field inputs.\u003c\/li\u003e\n\u003cli\u003eTest critical outputs individually.\u003c\/li\u003e\n\u003cli\u003eReview diagnostic status before returning the system to service.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003cp\u003eBecause channel allocation is controlled by the PLC application rather than stored in the module itself, additional configuration is generally not required after replacement.\u003c\/p\u003e\n\u003cdiv style=\"background: #fff8e1; padding: 15px; border-left: 4px solid #d4a017; margin-top: 15px;\"\u003e\n\u003cstrong\u003e Tip\u003c\/strong\u003e\u003cbr\u003eIf a single output channel reports an overload alarm, do not immediately replace the module. The 07 DC 91 groups output diagnostics internally, meaning a fault on one field device can generate alarms affecting multiple output channels within the same protection group.\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":52668498313579,"sku":"07DC91 GJR5251400R0202","price":500.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0953\/3227\/0443\/files\/abb-07dc91-gjr5251400r0202-digital-i-o-module-ulfbsldik3v_3556b465-58ee-4874-ac20-d5d11969f973.jpg?v=1765532482","url":"https:\/\/www.plcprotech.com\/pt\/products\/abb-07-dc-91-gjr5-2514-00-r0202-ac31-digital-i-o-module","provider":"PLC ProTech Ltd.","version":"1.0","type":"link"}