Technical Data
Inputs
5 volt-free contacts from the limit switches of the valves
1 volt-free contact from a second SRL which may be mounted at the same boiler (interlock)
1 volt-free contact from the low-level limiter
Outputs
2 volt-free change-over contacts each for bypassing/deactivating the safety circuit
Thermal current I th : 4A, switching capacity acc. to AC-15: 3 A / 230 V a.c.
1 volt-free change-over contact as a signalling contact for a second logic unit
Contactors must be interference-suppressed as per manufacturer‘s instructions (RC combination)
3 contacts for internal or external indication of status (pilot lamps)
Interval time
Adjusted at our works within the range 2 to 336 hours, in compliance with TRD 24/72h
Standby period
Adjusted at our works within the range 15 minutes to 2 hours, in compliance with TRD 1h
Purging time
Set at our works to 5 minutes
Indicators and adjustors
1 control panel at the PLC for triggering a test 3 pilot lamps for standby period / purging time, bypassing of the low-level limiter and deactivation of the safety circuit
Mains voltage
230 V +10/-15 %, 50 – 60 Hz
Voltage of the safety circuit
230 V, 50 – 60 Hz, optional 24 V, 50 – 60 Hz
Power consumption
26 W
Protection
Enclosure: IP 65 to EN 60529
Permissible ambient temperature
Maximum 55 °C
Case
Field case for wall mounting, with clear lid Case material: Polystyrene/polycarbonate, colour light gray
Cable entry / electrical connection
5 cable glands, M16, electrical connection via two terminal strips
Weight
Approx. 3.3 kg
