esserbus transponder 12 relays (8 bit)


Approval: VdS, BOSEC

The esserbus transponder works as a loop device on the multi-functional primary line. With the 12 relays module, it is possible to expand the number of control groups per control unit. Depending on the control unit, it can be integrated or used with fire detectors in mixed operation. The esserbus transponder can be optionally extended by adding the additional isolator board Part No. 788612. esserbus transponder voltage supply: via the multi-functional primary line. The esserbus transponder can be wired with an external switching voltage of 12V DC or 24V DC for the K1 to K12 relays. The external voltage supply of the transponder can be programmed to be monitored in the customer data in the operating mode. In the “floating” operating mode, no external switching voltage of the relays is necessary. 11 relays are freely programmable. The maximum line length from the transponder to the external device is up to 1000 m.
  • Only one loop address is needed per transponder
  • Max. 100 transponders per FACP
  • Max. 32 transponders per loop
  • Max. 32 transponders per detector zone

Additional Information:

External power supply is only optional – the transponder is fully operational with loop powering only.
Operating voltage10 ... 28 V DC
CE certificate0786-CPD-20611
Weight gapprox. 110 g
Contact load relay30 V DC / 1 A (max. 3 A each transponder)
Storage temperature-25 °C ... 75 °C
Air humidity< 95 % (non-condensing)
Quiescent current @ 19 V DCapprox. 250 μA
Type of protectionIP 40 (with housing)
Current consumption @ 12 V DCapprox. 3 mA
Ambient temperature-10 °C ... 50 °C
VdS classF
VdS-NrG 206044
DimensionsW: 150 mm H: 82 mm D: 20 mm
  • 788612 Loop isolator PCB
  • 788600 Surface mounting housing gray, similar to RAL 7035
  • 788650.10 Surface mounting housing white, similar to RAL 9003
  • 788601 Flush mounting housing gray, similar to RAL 7035
  • 788651.10 Flush mounting housing white, similar to RAL 9003
  • 788655 High IP housing base
  • 788656 High IP housing