The ABB RLM01 (3BDZ000398R1) is a PROFIBUS redundancy link module for industrial automation systems.
It converts a single PROFIBUS line into two redundant lines, preventing single points of failure.
Moreover, it supports high-speed communication from 9.6 Kbps to 12 Mbps with integrated diagnostics for reliability.
| Parameter | Specification |
|---|---|
| Connections | A, B, M |
| Transmission Rate | 9.6 kBit/s – 12 MBit/s |
| Interface Type | RS-485 |
| Connector | 9-pin Sub-D |
| Electrical Isolation | VDE 0110, functionally isolating |
| Test Voltage | 500 Veff |
| Device Protection Class | 3 |
Data Telegram Delay
A/B → M: 1 Bit time [µs] + 0.6 µs
M → A/B: 4 Bit times [µs] + 0.6 µs
| Parameter | Specification |
|---|---|
| Operating Voltage | 24 VDC (+20 … +33 V) |
| Typical Current | 150 mA at 24 V |
| Power Loss | Approx. 3.6 W |
| Connection | 8-pin terminal strip |
| Wire Cross Section | 0.14 – 1.5 mm² |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 … 50 °C |
| Transport / Storage Temperature | -30 … 85 °C |
| Relative Humidity | Max. 75% non-condensing during operation |
| Parameter | Specification |
|---|---|
| Function | Open in case of error |
| Switching Voltage | < 60 VDC |
| Switching Current | Max. 1 A |
| Parameter | Specification |
|---|---|
| Dimensions (H × W × D) | 134 × 56 × 70 mm |
| Weight | 330 g |
| Protection | IP 20 |
| Mounting | DIN rail, 35 mm |
| Region | Standard |
|---|---|
| USA | UL |
| Canada | CSA |
| Europe | CE |
| Maritime / Ships | Germanischer Lloyd (Category A, B, C, D) with 24 VDC power filter (Surge) |
Redundant Power Supply: To achieve maximum reliability, use both 24 VDC inputs from independent power sources.
Telegram Delay Calculation: When calculating the total PROFIBUS cycle time (TTR), ensure the specific bit-time delays ($1 \text{ Bit } + 0.6 \mu s$ and $4 \text{ Bits } + 0.6 \mu s$) are accounted for, especially in high-speed 12 Mbit/s configurations.
Termination: Each segment (A, B, and M) must be correctly terminated using active terminators or standard PROFIBUS connectors with termination switches.
Maritime Installation: For shipboard use, a 24 VDC surge filter is mandatory to comply with Germanischer Lloyd (GL) standards.
Q1: Is the RLM01 "transparent" to the protocol?
A: Yes. It operates at the physical layer (Layer 1). It does not require a GSD file, station address, or software configuration. It purely manages signal routing between A/B and M.
Q2: What causes the Alarm Contact to open?
A: The alarm contact typically indicates a loss of power (either Input 1 or 2) or a signal failure on one of the redundant PROFIBUS lines (Line A or Line B).
Q3: Can I mix different brands of PROFIBUS equipment?
A: Yes. Because it adheres to the RS-485 standard and is protocol-transparent, the RLM01 can bridge any standard PROFIBUS DP Master/Slave regardless of the manufacturer.
Q4: How does the delay affect my network?
A: The delay is minimal (a few bit times). However, in very large networks with multiple repeaters, you may need to adjust the "Slot Time" in your PLC/Master hardware configuration to prevent timeouts.
Global Express Shipping
Returns & Warranty
Manufacturer: ABB
Product No.: 3BDZ000398R1
Country of origin:Sweden
Product Type: PROFIBUS Redundancy Link Module
Barcode: 85371091
Payment: T/T, Western Union
Weight: 800g
Shipping port: Xiamen
Warranty: 12 months
The ABB RLM01 (3BDZ000398R1) is a PROFIBUS redundancy link module for industrial automation systems.
It converts a single PROFIBUS line into two redundant lines, preventing single points of failure.
Moreover, it supports high-speed communication from 9.6 Kbps to 12 Mbps with integrated diagnostics for reliability.
| Parameter | Specification |
|---|---|
| Connections | A, B, M |
| Transmission Rate | 9.6 kBit/s – 12 MBit/s |
| Interface Type | RS-485 |
| Connector | 9-pin Sub-D |
| Electrical Isolation | VDE 0110, functionally isolating |
| Test Voltage | 500 Veff |
| Device Protection Class | 3 |
Data Telegram Delay
A/B → M: 1 Bit time [µs] + 0.6 µs
M → A/B: 4 Bit times [µs] + 0.6 µs
| Parameter | Specification |
|---|---|
| Operating Voltage | 24 VDC (+20 … +33 V) |
| Typical Current | 150 mA at 24 V |
| Power Loss | Approx. 3.6 W |
| Connection | 8-pin terminal strip |
| Wire Cross Section | 0.14 – 1.5 mm² |
| Parameter | Specification |
|---|---|
| Operating Temperature | 0 … 50 °C |
| Transport / Storage Temperature | -30 … 85 °C |
| Relative Humidity | Max. 75% non-condensing during operation |
| Parameter | Specification |
|---|---|
| Function | Open in case of error |
| Switching Voltage | < 60 VDC |
| Switching Current | Max. 1 A |
| Parameter | Specification |
|---|---|
| Dimensions (H × W × D) | 134 × 56 × 70 mm |
| Weight | 330 g |
| Protection | IP 20 |
| Mounting | DIN rail, 35 mm |
| Region | Standard |
|---|---|
| USA | UL |
| Canada | CSA |
| Europe | CE |
| Maritime / Ships | Germanischer Lloyd (Category A, B, C, D) with 24 VDC power filter (Surge) |
Redundant Power Supply: To achieve maximum reliability, use both 24 VDC inputs from independent power sources.
Telegram Delay Calculation: When calculating the total PROFIBUS cycle time (TTR), ensure the specific bit-time delays ($1 \text{ Bit } + 0.6 \mu s$ and $4 \text{ Bits } + 0.6 \mu s$) are accounted for, especially in high-speed 12 Mbit/s configurations.
Termination: Each segment (A, B, and M) must be correctly terminated using active terminators or standard PROFIBUS connectors with termination switches.
Maritime Installation: For shipboard use, a 24 VDC surge filter is mandatory to comply with Germanischer Lloyd (GL) standards.
Q1: Is the RLM01 "transparent" to the protocol?
A: Yes. It operates at the physical layer (Layer 1). It does not require a GSD file, station address, or software configuration. It purely manages signal routing between A/B and M.
Q2: What causes the Alarm Contact to open?
A: The alarm contact typically indicates a loss of power (either Input 1 or 2) or a signal failure on one of the redundant PROFIBUS lines (Line A or Line B).
Q3: Can I mix different brands of PROFIBUS equipment?
A: Yes. Because it adheres to the RS-485 standard and is protocol-transparent, the RLM01 can bridge any standard PROFIBUS DP Master/Slave regardless of the manufacturer.
Q4: How does the delay affect my network?
A: The delay is minimal (a few bit times). However, in very large networks with multiple repeaters, you may need to adjust the "Slot Time" in your PLC/Master hardware configuration to prevent timeouts.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Color pattern |
Silver
Greyish White
White
|
| Country of origin |
Sweden
|
| Power source |
DC Power
|
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