The ISM07 Relay I/O submodule for IRIO has 4 Relay outputs and 4 Digital Inputs.
Output functions available for selection for each Output:
- On/Off
- Heating
- Cooling
- Heating + Cooling
- 2 speed fan
- 3 speed fan
- Aircon Interface Relay
- Unassigned
Each Output is connected to a Normally Open Relay with 2 terminals COM, NO (Normally Open)
Connections
| NO1/COM1: | Normally Open Relay Contact for Output 1 |
| NO2/COM2: | Normally Open Relay Contact for Output 2 |
| NO3/COM3: | Normally Open Relay Contact for Output 3 |
| NO4/COM4: | Normally Open Relay Contact for Output 4 |
| I1: | Digital Input 1 |
| COM: | Ground for Inputs |
| I2: | Digital Input 2 |
| I3: | Digital Input 3 |
| COM: | Ground for Inputs |
| I4: | Digital Input 4 |
Refer to the IRIO manual for instructions on setting the IRIO ID, meaning of the LEDs and Comfigurator programming.
Relay Specifications
| Breakdown Voltage (Contact – Coil) | 1500VAC 1 min |
| Insulation Resistance | 1000 Mohms |
| Switching Capacity | 240VAC, 2A |
| Mechanical Life | 100 million cycles |
| Electrical Life | 100,000 cycles |
| Coil Resistance | 720 Ohms (17 mA operating current from 12V) |
Maximum current from 12V with 4 relays switched On = 68 mA
LEDs
| K1-On (red) | Indicates that Relay 1 is in the ON state |
| K2-On (red) | Indicates that Relay 2 is in the ON state |
| K3-On (red) | Indicates that Relay 3 is in the ON state |
| K4-On (red) | Indicates that Relay 4 is in the ON state |
| PWR | Indicates that 12V power is present |
