Yokogawa ARM15A Mechanical Relay Contact Input Module
The Yokogawa ARM15A , also cataloged as the ARM15A Mechanical Relay Contact Input Module, serves as the primary SARM15A [Product Type] utilized to execute field dry-contact sense routing across CENTUM VP / CENTUM CS 3000 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ARM15A (SARM15A base variant) |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | Standard module weight |
| Dimensions | Standard Yokogawa rack module footprint |
| Operating Temp | Standard industrial range |
| Power Consumption | 24 VDC internal circuit, 0.32 A max |
| Contact Capacity | 32-point contact points (Single / Dual-redundant) |
| Field Terminals | M4 screw terminals |
| Compatible Modules | ADV151 (32-point DI), ADV161 (64-point DI) |
| Signal Cable Compatibility | AKB331 (32-point), AKB337 (64-point) |
| Input Signal Thresholds | ON: 150 ohm or less, OFF: 200 kohm or more |
| Field Power Supply | Dual-line 24 VDC (0.3 A max per 16-point line) |
| Minimum Contact Load | 24 VDC, 13 mA |
| Insulation Resistance | At least 10 Mohm at 500 VDC |
| Withstanding Voltage | Field terminals to case: 1.5 kV; 24 V power to case: 500 V |
Signal Routing & Field Loop Isolation
The unit features galvanically separated input channels configured to interface field mechanical contact closures directly to central process logic. Channel insulation rated at 1.5 kV withstand voltage prevents common-mode voltage spikes and high-voltage field noise from penetrating the central backplane bus. Signal noise suppression circuit paths maintain discrete signal boundary integrity under high electromagnetic interference environments.
Frequently Asked Questions
Q: What signal cables are required to interface the ARM15A with Yokogawa ADV151 or ADV161 digital input modules?
A: Use the AKB331 cable for 32-point configurations with the ADV151 module, or the AKB337 cable when interfacing with 64-point ADV161 modules.
Q: How is field power distributed across the 32 input channels?
A: Field power is distributed using a dual-line 24 VDC configuration, supplying power independently per 16-point block with a maximum current rating of 0.3 A per line.
Q: What are the electrical loop conditions required for detecting ON and OFF state transitions?
A: An ON signal state requires a loop resistance of 150 ohm or less, while an OFF signal state requires a loop resistance of at least 200 kohm.
Field Installation Guidelines
- Secure the ARM15A module firmly into the designated Yokogawa I/O slot, ensuring proper engagement of backplane connectors.
- Wire field contacts using M4 screw terminals, applying recommended torque specifications to maintain reliable electrical connections under ambient industrial vibration.
- Connect external 24 VDC field supply lines to the dual power terminals, ensuring line current draw does not exceed 0.3 A per 16-point group.
- Verify that field device contact ratings meet the minimum load requirement of 24 VDC at 13 mA for correct contact wetting operation.
- Confirm field wiring shields are properly tied to ground points to maintain the 1.5 kV field-to-case withstand voltage rating.
Yokogawa ARM15A Mechanical Relay Contact Input Module
Yokogawa ARM15A Mechanical Relay Contact Input Module
The Yokogawa ARM15A , also cataloged as the ARM15A Mechanical Relay Contact Input Module, serves as the primary SARM15A [Product Type] utilized to execute field dry-contact sense routing across CENTUM VP / CENTUM CS 3000 platforms.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | ARM15A (SARM15A base variant) |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | Standard module weight |
| Dimensions | Standard Yokogawa rack module footprint |
| Operating Temp | Standard industrial range |
| Power Consumption | 24 VDC internal circuit, 0.32 A max |
| Contact Capacity | 32-point contact points (Single / Dual-redundant) |
| Field Terminals | M4 screw terminals |
| Compatible Modules | ADV151 (32-point DI), ADV161 (64-point DI) |
| Signal Cable Compatibility | AKB331 (32-point), AKB337 (64-point) |
| Input Signal Thresholds | ON: 150 ohm or less, OFF: 200 kohm or more |
| Field Power Supply | Dual-line 24 VDC (0.3 A max per 16-point line) |
| Minimum Contact Load | 24 VDC, 13 mA |
| Insulation Resistance | At least 10 Mohm at 500 VDC |
| Withstanding Voltage | Field terminals to case: 1.5 kV; 24 V power to case: 500 V |
Signal Routing & Field Loop Isolation
The unit features galvanically separated input channels configured to interface field mechanical contact closures directly to central process logic. Channel insulation rated at 1.5 kV withstand voltage prevents common-mode voltage spikes and high-voltage field noise from penetrating the central backplane bus. Signal noise suppression circuit paths maintain discrete signal boundary integrity under high electromagnetic interference environments.
Frequently Asked Questions
Q: What signal cables are required to interface the ARM15A with Yokogawa ADV151 or ADV161 digital input modules?
A: Use the AKB331 cable for 32-point configurations with the ADV151 module, or the AKB337 cable when interfacing with 64-point ADV161 modules.
Q: How is field power distributed across the 32 input channels?
A: Field power is distributed using a dual-line 24 VDC configuration, supplying power independently per 16-point block with a maximum current rating of 0.3 A per line.
Q: What are the electrical loop conditions required for detecting ON and OFF state transitions?
A: An ON signal state requires a loop resistance of 150 ohm or less, while an OFF signal state requires a loop resistance of at least 200 kohm.
Field Installation Guidelines
- Secure the ARM15A module firmly into the designated Yokogawa I/O slot, ensuring proper engagement of backplane connectors.
- Wire field contacts using M4 screw terminals, applying recommended torque specifications to maintain reliable electrical connections under ambient industrial vibration.
- Connect external 24 VDC field supply lines to the dual power terminals, ensuring line current draw does not exceed 0.3 A per 16-point group.
- Verify that field device contact ratings meet the minimum load requirement of 24 VDC at 13 mA for correct contact wetting operation.
- Confirm field wiring shields are properly tied to ground points to maintain the 1.5 kV field-to-case withstand voltage rating.
