CM-S21-24

CONTROL UNIT, CM-S21-24, 24VAC/DC, 2NO+1NOAUXUP TO 2CM SWITCHES

The CM control units will monitor one to four CM switches to category 3 in accordance with EN954-1. A fully monitored system that meets category 3 can be achieved when 1 to 30 plus CM switches are used with the CM control units. The CM-SE expansion module can monitor up to 5 CM safety interlock switches each. Multiple CM-SE expansion modules can be attached to the CM-S41 or CM-S21 control units. The CM control units provide

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*EDM** External Device Monitoring, also called MPCE monitoring and an Automatic Reset Function. This allows the CM control units to replace a safety relay in most applications. **Application:** The CM Series is ideal for guard door applications of either sliding or swinging types where an extra level of safety is required. **NEMA 6** enclosure enables the CM Series safety interlock switches to satisfy most environmental requirements. The CM-S31 stainless steel version has excellent corrosion resistance. **Long Life:** The CM Series control units are rated for 10 million actuations. **Tamper Resistant:** The magnetically coded CM switches are tamper resistant to common magnets. **Emergency Stop:** Dual Channel NC E-stop input is monitored by the CM-S41 control unit in addition to four CM switches. **Inputs:** Only CM Series non-contact switches may be used as inputs to the CM control units. **Outputs:** the CM-S21 and CM-S41 both have 2 NO + 1 NC Aux. Outputs. Conforms to EN954-1, EN1088, EN60204-1, TUV certified, UL and C-UL listed, CE marked.

**CM-S21 Control Unit. Power Requirement:** 24 VAC. **Inputs:** Up to two CM non-contact switches. **Outputs:** 2 NO safety Relay Outputs + 1NC Aux. Relay Output. **Reset Mode:** Automatic or Monitored Manual.