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11.1.2 Mainboard inputs and outputs
11.1.2.1 Customer side interfaces
Inputs
ST08:
•
Control signal 0...10 VDC
•
Control signal 0...20 mA
•
Control signal 0...140 Ohm
Outputs
ST03:
•
Potential-free programmable NC and
NO contacts, (factory assignment is
„collective fault“)
ST10.1:
•
Connection option für 2 additional
relays of the top head type (K20, K21)
(ordering option). With the SLH40 and
SLH50 units, connector ST10.1 is used
already for the ex-factory relay K20. In
this case, an ordering option is available
comprising K21 only .
ST07:
Control signal 0...10 VDC (max. 8 mA)
ST08:
•
+20 VDC humidity sensor supply
voltage (max. 20 mA)
11.1.2.2 System interfaces
Power supply and safety interlock
ST01:
•
4-pin plug connection with screw termi-
nal adaptor for L and N power connec-
tion and safety interlock („Terminals 1/
2“)
Inputs
ST09:
•
Filling level sensor
ST04-B:
•
Galvanically isolated thermo switch
input (via optical coupler)
•
Dielectric strength 600 VAC
Outputs
ST04-A:
•
Main contactor(s)
ST05:
•
Blow-down pump
ST06:
•
Inlet solenoid valve
ST07:
•
Solid state relay control signal (PWM),
20 mA max.
Bidirectional
ST12.1:
•
Control panel serial interface
ST 13:
•
RS485 interface adapter PCB socket