Yokogawa RC1*A PLC Module Card
The Yokogawa RC1*A, also cataloged as the RC1*A PLC Module Card, operates as a dedicated hardware component for discrete signal processing and digital output execution within Yokogawa CENTUM VP and CENTUM CS 3000 DCS platforms. Powered by a 24 VDC (+/-10%) supply rail, the card executes sink or source logic control with up to 1 A output current per channel (0 to 24 VDC range), exchanging system parameters via Modbus RTU and Modbus TCP protocols across operating temperatures from -20 to 70 deg C.
Suffix Breakdown & Model Matrix
| Code Segment | Position / Option | Functional Specification |
|---|---|---|
| RC1 | Base Model | Discrete PLC Logic & Communication Interface Card |
| ***** | Option Suffix | Hardware revision / Mounting coating option |
| A | Version Designator | First-generation circuit board release |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RC1*A |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg (3.31 lbs) |
| Dimensions | 12.7 cm x 15.2 cm x 25.4 cm (5.0 in x 6.0 in x 10.0 in) |
| Operating Temp | -20 to 70 deg C (-4 to 158 deg F) |
| Power Consumption | Operating Voltage: 24 VDC (+/-10%) |
| Output Type | Configurable Sink or Source Digital Output |
| Output Drive Capacity | 1 A Channel Load (0 to 24 VDC Output Range) |
| Communication Protocols | Modbus RTU, Modbus TCP |
| System Platform | Yokogawa CENTUM VP / CENTUM CS 3000 DCS |
| Module Category | PLC Control Module Card |
Field Signal Routing & DCS Loop Integration
The RC1*A ensures deterministic timing during digital output actuation and discrete event logging. Equipped with optical channel-to-channel isolation, the card shields sensitive internal processor buses from field line transients, contact bounce arc noise, and ground loops. Integrated signal conditioning circuitry preserves transparent pass-through for concurrent 4-20 mA HART loop protocol instruments sharing common marshalling panels, protecting digital HART FSK frequency modulation from inductive switching noise.
Frequently Asked Questions
Q: How is the digital output channel configured for sink versus source mode on the RC1*A?
A: Sink or source operation is determined by physical terminal jumper wiring on the field wiring block in accordance with the field load power wiring scheme.
Q: What communication interfaces are available on the RC1A card for host system integration? A: The RC1A supports industrial Ethernet and serial communication links utilizing Modbus TCP and Modbus RTU protocols for peer-to-peer and supervisory data access.
Field Installation Guidelines
- Power Isolation: Fully de-energize primary 24 VDC power supply feeds and external field load voltages before inserting, removing, or wiring the RC1*A card.
- Backplane Alignment: Slide the card along the chassis guide rails until the backplane connectors seat completely, then lock the top and bottom retaining screws.
- Field Load Wiring: Ensure external inductive loads driven by the 1 A output channels (such as solenoid valves or relay coils) have flyback suppression diodes installed across their terminals.
- Shield Terminations: Connect communication and signal cable shield drain wires directly to the cabinet ground bar using short, low-impedance grounding straps.
- Thermal Spacing: Maintain clean air ventilation pathways above and below the card chassis to support natural convective heat dissipation up to the 70 deg C operating threshold.
Yokogawa RC1*A PLC Module Card
Yokogawa RC1*A PLC Module Card
The Yokogawa RC1*A, also cataloged as the RC1*A PLC Module Card, operates as a dedicated hardware component for discrete signal processing and digital output execution within Yokogawa CENTUM VP and CENTUM CS 3000 DCS platforms. Powered by a 24 VDC (+/-10%) supply rail, the card executes sink or source logic control with up to 1 A output current per channel (0 to 24 VDC range), exchanging system parameters via Modbus RTU and Modbus TCP protocols across operating temperatures from -20 to 70 deg C.
Suffix Breakdown & Model Matrix
| Code Segment | Position / Option | Functional Specification |
|---|---|---|
| RC1 | Base Model | Discrete PLC Logic & Communication Interface Card |
| ***** | Option Suffix | Hardware revision / Mounting coating option |
| A | Version Designator | First-generation circuit board release |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | RC1*A |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg (3.31 lbs) |
| Dimensions | 12.7 cm x 15.2 cm x 25.4 cm (5.0 in x 6.0 in x 10.0 in) |
| Operating Temp | -20 to 70 deg C (-4 to 158 deg F) |
| Power Consumption | Operating Voltage: 24 VDC (+/-10%) |
| Output Type | Configurable Sink or Source Digital Output |
| Output Drive Capacity | 1 A Channel Load (0 to 24 VDC Output Range) |
| Communication Protocols | Modbus RTU, Modbus TCP |
| System Platform | Yokogawa CENTUM VP / CENTUM CS 3000 DCS |
| Module Category | PLC Control Module Card |
Field Signal Routing & DCS Loop Integration
The RC1*A ensures deterministic timing during digital output actuation and discrete event logging. Equipped with optical channel-to-channel isolation, the card shields sensitive internal processor buses from field line transients, contact bounce arc noise, and ground loops. Integrated signal conditioning circuitry preserves transparent pass-through for concurrent 4-20 mA HART loop protocol instruments sharing common marshalling panels, protecting digital HART FSK frequency modulation from inductive switching noise.
Frequently Asked Questions
Q: How is the digital output channel configured for sink versus source mode on the RC1*A?
A: Sink or source operation is determined by physical terminal jumper wiring on the field wiring block in accordance with the field load power wiring scheme.
Q: What communication interfaces are available on the RC1A card for host system integration? A: The RC1A supports industrial Ethernet and serial communication links utilizing Modbus TCP and Modbus RTU protocols for peer-to-peer and supervisory data access.
Field Installation Guidelines
- Power Isolation: Fully de-energize primary 24 VDC power supply feeds and external field load voltages before inserting, removing, or wiring the RC1*A card.
- Backplane Alignment: Slide the card along the chassis guide rails until the backplane connectors seat completely, then lock the top and bottom retaining screws.
- Field Load Wiring: Ensure external inductive loads driven by the 1 A output channels (such as solenoid valves or relay coils) have flyback suppression diodes installed across their terminals.
- Shield Terminations: Connect communication and signal cable shield drain wires directly to the cabinet ground bar using short, low-impedance grounding straps.
- Thermal Spacing: Maintain clean air ventilation pathways above and below the card chassis to support natural convective heat dissipation up to the 70 deg C operating threshold.
