How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
The Schneider Electric XPSMCMC10804 is a Modicon MCM safety controller CPU with 8 safety digital inputs and 4 OSSD safety outputs, supplied at 24 V DC through captive screw terminals. It monitors machine safety functions such as emergency stop, guard interlocking, light curtains and two-hand control, and expands over its backplane bus to up to 14 I/O modules for larger safety architectures.
Choose the XPSMCMC10804 over the 2-output controller variant when a machine needs 4 independent OSSD output pairs from one CPU - for example separate zones each with their own contactor or drive enable - rather than relying only on expansion modules for extra outputs. Both controllers share the same 8-input count and reach Category 4 / PL e per ISO 13849-1 with SILCL 3 per IEC 62061, so the choice comes down to how many safety outputs the base CPU must drive directly. Configuration runs through EcoStruxure Machine Expert software over the Mini USB port, and the system scales to up to 14 backplane-connected expansion modules - input, output or non-safe diagnostic modules - when the machine's safety-function count outgrows the CPU's own 8/4 I/O.
The XPSMCMC10804 fits machines with several independent safety-output zones - multi-station guarding, light-curtain-protected cells with separate drive enables, or two-hand control stations - where each zone needs its own OSSD pair rather than sharing outputs across the cell.
| Range of product | Modicon Safety automation |
|---|---|
| Device short name | XPSMCM |
| Electrical connection | Screw terminal |
| Product or component type | Safety controller CPU |
| [Us] rated supply voltage | 24 V - 20...20 % DC |
| Number of inputs | 8 digital for input connection, 4 digital for interlock start/restart or external device monitoring |
| Number of outputs | 4 safety outputs OSSD for contactor/drive connection, 4 test for line control outputs, 4 configurable for diagnostic connection |
| Discrete input voltage | 24 V |
| Discrete output current | 400 mA |
| Discrete input current | 400 mA |
| Discrete input type | Safety input, PNP |
| Discrete output type | PNP |
| Function of module | Emergency stop conforming to ISO 13850, Guard monitoring conforming to EN/ISO 14119, Enabling switch monitoring conforming to IEC 60947-5-1, Light curtain monitoring conforming to IEC 61496-1, Foot switch monitoring conforming to IEC 60947-5-1, Light curtain monitoring conforming to EN/ISO 14119, Switch monitoring conforming to EN 574, Two-hand control conforming to EN/ISO 14119, Safety mat monitoring conforming to IEC 61326-1, Switch monitoring conforming to IEC 61800-5-2, Muting function of light curtains conforming to IEC 61800-5-2, Safety time delays, Counter functions |
| Backplane connector | Without |
| Synchronisation time between inputs | < 0.5 ms |
|---|---|
| Power dissipation in W | 3 W |
| Maximum number of I/O expansion module | 14 with 128 discrete output(s) for input, 14 with 32.0 discrete output(s) for output |
| Integrated connection type | Backplane expansion bus, USB 2.0 port |
| Data storage equipment | SD card (optional) |
| Inductive load | 2.4 mH |
| Load capacitance | 0.82 µF |
| Safety level | Can reach category 4 conforming to ISO 13849-1, Can reach PL = e conforming to ISO 13849-1, Type 4 conforming to IEC 61496-1, SILCL 3 conforming to IEC 62061 |
| Quality labels | CE |
| Local signalling | 1 LED green with PWR marking for power ON, 1 LED green with RUN marking for RUN (status), 1 LED red with E IN marking for internal error, 1 LED red with E EX marking for external error, 1 LED orange with COM marking for communication, 1 LED blue with EN marking for master enable, 8 LEDs yellow with IN marking for input status, 2 LEDs green/red with OUT marking for output status, 2 LEDs yellow with RST marking for restart signal, 2 LEDs yellow with STATUS marking for output channel |
| Connections - terminals | 2 captive screw terminals, removable terminal block, 1 captive screw terminals, removable terminal block |
| Cable cross section | 0.2…1.5 mm² - 24 AWG...16 AWG flexible cablewithout cable end, 0.2…2.5 mm² - 24 AWG...14 AWG flexible cablewithout cable end, 0.25…1 mm² - 23 AWG...18 AWG flexible cablewith cable end, without bezel, 0.25…2.5 mm² - 23 AWG...14 AWG flexible cablewith cable end, with bezel, 0.25…1.5 mm² - 23 AWG...16 AWG flexible cablewith cable end, without bezel, 0.5…1.5 mm² - 20 AWG...16 AWG flexible cablewith cable end, with double bezel, 0.2…1 mm² - 24 AWG...18 AWG solid cablewithout cable end, 0.2…2.5 mm² - 24 AWG...14 AWG solid cablewithout cable end |
| Mounting support | Omega 35 mm DIN rail conforming to EN 50022 |
| Depth | 114.5 mm |
| Height | 99 mm |
| Width | 22.5 mm |
| Net weight | 0.155 kg |
| Standards | IEC 61496-1, ISO 13849-1, IEC 61508, IEC 61800-5-1, IEC 62061 |
|---|---|
| Product certifications | TÜV, RCM, cULus |
| IP degree of protection | IP20 |
| Ambient air temperature for operation | -10…55 °C |
| Ambient air temperature for storage | -20…85 °C |
| Relative humidity | 10…95 % |
| Pollution degree | 2 |
| [Uimp] rated impulse withstand voltage | 4 kV conforming to IEC 61800-5-1 |
| Safety reliability data | PFHd = 1.35E-8 1/h high, DC > 99 %, MTTFd < 100 years |
| Insulation | 250 V AC between power supply and housing conforming to IEC 61800-5-1 |
| Overvoltage category | II |
| Electromagnetic compatibility | Electrostatic discharge immunity test - test level: 6 kV (on contact) conforming to IEC 61000-4-2, Electrostatic discharge immunity test - test level: 20 kV (on air) conforming to IEC 61000-4-2, Susceptibility to electromagnetic fields - test level: 10 V/m (80...1000 MHz) conforming to IEC 61000-4-3, Susceptibility to electromagnetic fields - test level: 30 V/m (1.4 GHz...2 GHz) conforming to IEC 61000-4-3 |
| Vibration resistance | +/-0.35 mm (f= 10…55 Hz) conforming to IEC 61496-1 |
| Shock resistance | 10 gn (duration = 16 ms) for 1000 shocks on each axis conforming to IEC 61496-1 |
| service life | 20 year(s) |
| Part number | XPSMCMC10804 |
|---|---|
| Type designation | XPSMCM |
| Brand | Schneider Electric |
| Condition | New, factory sealed |
| Source | Schneider Electric and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| Warranty (in months) | 18 |
|---|
| Unit Type of Package 1 | PCE |
|---|---|
| Number of Units in Package 1 | 1 |
| Package 1 Height | 4.500 cm |
| Package 1 Width | 12.600 cm |
| Package 1 Length | 16.500 cm |
| Package 1 Weight | 262.000 g |
| Unit Type of Package 2 | S03 |
| Number of Units in Package 2 | 26 |
| Package 2 Height | 30.000 cm |
| Package 2 Width | 30.000 cm |
| Package 2 Length | 40.000 cm |
| Package 2 Weight | 8.891 kg |
| Shipping weight | 0.155 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 30 Oct 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated operational voltage of XPSMCM is 24 V DC.
The tariff (HS) code on file for XPSMCM is 853710.
XPSMCM ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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