Input/Output Unit with Isolator (Model SA4700-1021IMC)
INPUT/OUTPUT UNIT WITH ISOLATOR (MODEL SA4700-1021IMC)
The Input/Output Unit provides supervision of one or more normally open contacts connected to a single pair of cables and a set of change-over relay output contacts.
Compliant with EN54-17 & 18, it is set to return an analogue value of 4 in the event of an open or short-circuit fault and 16 during normal operation. The status of the inputs is reported by means of two input bits. The change-over contacts are operated by an output bit.
It is fitted with a bi-directional short-circuit isolator and will be unaffected by loop short circuits on either loop input or output.
- Supervision of one or more normally open contacts
- Compliant with EN54-17 & 18
- Fitted with a bi-directional short-circuit isolator
| Min Loop in Operating Voltage | 17V DC |
| Max Loop Operating Voltage | 35V DC |
| Power-Up Surge Current | 900uA |
| Quiescent | 500uA |
| Maximum Cable Resistance | 50 Ohm |
| Maximum Continuous Current | 1A |
| Operating Temperature | –40°C to +70°C |
| Humidity (no condensation) | 0–95% RH |
| IP rating | 54 |
| Dimensions of Input/Output Unit (surface mount) | 60 x 150 x 90mm |
| Weight | 244g |