Measuring Voltage in Industrial Control Circuits
A practical voltage-testing guide for industrial control panels, covering reference points, meter selection, live-dead-live checks, voltage drop, ghost voltage, stored energy and intermittent faults.
Manufacturer: ProSoft
Product No.: MVI69-PDPS
Country of origin:United States
Product Type: PLC Communication Modules
Payment: T/T, Western Union
Weight: 1500g
Shipping port: Xiamen
Warranty: 12 months
Facilitating reliable integration into decentralized peripheral networks, the ProSoft MVI69-PDPS operates as a high-performance Profibus DP Slave communication gateway for Rockwell Automation CompactLogix platforms. This module enables a CompactLogix processor to interface directly with a Profibus DP Master, facilitating rapid cyclical I/O data exchange. With support for high-speed transmission and a flexible internal database, it acts as a seamless link between disparate industrial networks, preserving signal integrity and operational diagnostic data without requiring heavy processor overhead.
| Parameter | Specification Value |
|---|---|
| Manufacturer | ProSoft Technology |
| Model Number | MVI69-PDPS |
| Module Type | Profibus DP Slave Communication Module |
| Compatible Platform | Rockwell Automation CompactLogix (1769 Bus) |
| Backplane Current Draw | 800 mA maximum @ 5 VDC |
| Operating Temperature | 0 to 60 degC (32 to 140 degF) |
| Storage Temperature | -40 to 85 degC (-40 to 185 degF) |
| Relative Humidity | 5% to 95% RH (non-condensing) |
| Baud Rate Range | 9.6 kbps to 12 Mbps (Auto-baud detection supported) |
| Internal Database Size | 400 Registers (16-bit words) |
| Configuration Port | RJ45 RS-232 (no hardware handshaking) |
| Profibus Connector Type | DB9 Female (optical isolation standard) |
| LED Status Displays | Power, Module Status, Application Status, Serial Activity, Error Status |
| Net Weight | 0.5 kg (1.1 lbs) |
| Shipping Weight (Calculated) | 1.5 kg (3.3 lbs) |
| Interface Port | Pin / Terminal Assignment | Description & Function |
|---|---|---|
| Profibus DB9 Female | Pin 3 (RxD/TxD-P), Pin 8 (RxD/TxD-N) | Standard Profibus DP communication signals (Data A and Data B) with optical isolation. |
| Profibus DB9 Female | Pin 5 (DGND), Pin 6 (VP) | Isolated ground and 5 VDC power termination reference for active bus termination. |
| CFG RJ45 Port | RJ45 to DB-9M Cable Interface | Dedicated RS-232 configuration and diagnostics connection link for ProSoft software toolset. |
The MVI69-PDPS is specifically engineered for CompactLogix systems leveraging the 1769 system bus. When upgrading older architectures or moving between controller platforms, note that this module occupies a single slot and can be placed in any local or remote rack. For ControlLogix (1756) platforms, refer to the MVI56-PDPS or MVI56E-PDPS. For point-to-point serial Modbus solutions within the same chassis, consider the MVI69-MCM module.
A major factor in commissioning failure is backplane power overloading. The MVI69-PDPS draws a significant 800 mA at 5 VDC. System designers must calculate the cumulative power budget of all 1769 modules placed on each power supply segment. Exceeding the maximum power capacity or the rated slot distance of the power supply (typically 4 module slots max) can cause erratic system behavior, backplane communication drops, or physical component degradation due to voltage sag.
Prior to connecting the unit to an operational physical segment, you must upload the ProSoft GSD file (PRSF0E8F.GSD) to your master controller's hardware configuration software (such as Siemens STEP 7 or TIA Portal). Define the I/O memory allocation length in the master software to exactly match the parameter config defined in the CompactLogix controller's configuration files. Mismatched database configurations will trigger network fault conditions on the Profibus Master, causing the module's Error LED to blink.
Verify that the bus levers on adjacent 1769 modules are in the unlocked (fully left) position before attempting insertion.
Align the module's interlocking tongue-and-groove guides with the adjacent slot and slide the module onto the DIN rail until the backplane connectors link firmly.
Slide the latching bus lever fully to the right to lock the mechanical and electrical connection in place.
Connect the Profibus DB9 network cable, ensuring proper terminal end shielding, and connect the RJ45 serial configuration cable for direct software configuration.
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| Country of origin |
United States
|