Description:
The ABB 1SVR011714R1100, commercially designated as the CR-M2SF22, is a plug-in electromechanical interface relay module belonging to ABB’s CR-M Series of control relays. It features a 24 V DC coil, two changeover (2 CO / DPDT) silver-alloy contacts rated up to 6 A at 250 V AC, an integrated LED status indicator, a manual test/force button, and a built-in RC coil suppression circuit. Designed to be plugged into a matching CR-M socket (typically 90° or straight orientation), the 1SVR011714R1100 is the industry-standard solution for buffering low-power PLC/DCS digital outputs, driving higher-current loads (pilot lamps, solenoid valves, small contactors), and providing galvanic isolation between sensitive control electronics and noisy field circuits.h2 Application Scenarios:A food-processing plant’s packaging line had its ABB AC500 PLC digital output cards failing prematurely — the root cause was traced to inductive voltage spikes fed back from dozens of 24 V DC solenoid valves directly driven by the DO modules. The panel builder inserted a bank of ABB 1SVR011714R1100 relay modules between the PLC DO cards and the valve terminals, using the PLC’s 24 V DC DO to energize the relay coil and the relay contacts to switch the valve solenoids. The 1SVR011714R1100 provided both galvanic isolation and coil-suppression (via its built-in RC snubber), eliminating back-EMF damage to the PLC. The LED indicator also let technicians instantly see which valve was being commanded — something they lost with solid-state interposing. This scenario illustrates the core value of the 1SVR011714R1100: it is the first line of defense for expensive electronic I/O, simplifies troubleshooting with visual status, and standardizes interposing relay wiring across the panel.h2
Parameter:
| Main Parameters | Value/Description |
|---|---|
| Product Model | 1SVR011714R1100 (CR-M2SF22) |
| Manufacturer | ABB (ABB Control Products / Low Voltage Division) |
| Product Category | Electromechanical Interface Relay Module / Plug-In Relay |
| Coil Voltage | 24 V DC (Typical tolerance -20% / +25%) |
| Contact Configuration | 2 CO (DPDT / 2 Changeover) — 2 Form C |
| Contact Rating | 6 A @ 250 V AC / 30 V DC (resistive load) |
| Mechanical Life | ≥ 10 million operations |
| Electrical Life | ≥ 100,000 operations @ rated resistive load |
| Built-In Features | LED coil-status indicator + Manual test/force button + RC coil suppression |
| Socket / Base Type | CR-M…S (e.g., CR-M2S / CR-M4S 90° or straight — order separately) |
| Mounting Method | Plugs into DIN-rail mounted CR-M socket (35 mm top-hat rail) |
| Operating Temp. | -40 °C to +70 °C |
| Protection Rating | IP20 (finger-safe when plugged into socket, installed in cabinet) |
| Certifications | CE, UL, CSA, GL (Marine), RoHS |
h2 Technical Principles and Innovative Values:
- PLC I/O Buffering & Galvanic Isolation: The 1SVR011714R1100 decouples the low-current semiconductor outputs of a PLC/DCS (typically 0.5 A max) from the higher inrush or inductive load currents of field actuators. By switching the load through its silver-cadmium-oxide contacts rather than the PLC transistor, it protects the automation hardware from overcurrent, back-EMF, and ground-loop issues — substantially extending I/O module life.
- Built-In Diagnostics & Test Facility: Unlike bare solid-state interposing, the ABB 1SVR011714R1100 has a front-mounted mechanical test button that can latch the contacts ON for wiring verification without a live PLC signal, plus a bright LED that confirms coil energization at a glance — invaluable during commissioning and fault-finding on live panels.
- Integrated Coil Suppression for Clean Switching: The onboard RC snubber across the 24 V DC coil absorbs the voltage spike generated when the coil is de-energized, preventing EMI from propagating back onto the 24 V DC control bus and reducing false triggering of adjacent sensitive electronics — a frequent problem with unsuppressed relay coils in dense MCCs.
