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10.3.1 Connections on the main-
board
10.3.1.1 Customer-side interfaces
Inputs
ST08:
•
05: control signal input 0...10 VDC
•
06: control signal input 0...20 mA
•
07: control signal input 0...140
Ω
•
08: digital input „Start cooling“ (12
VDC)
Outputs
ST03:
•
Potentialfree NC and NO contacts of
the basic relay. Ex-factory assignment
of the basic relay is „collective fault“.
The assignment can be changed to an
other signalling or switching function by
programming the relevant parameter
ST10.1/ST10.2:
•
Connections for a pair of optionally
orderable relays K20/K21 (ST10.1) and
K22/K23 (ST10.2) each in DIN rail ver-
sion with wiring harness, usually freely
assignable. When a combined system
was ordered, K20 and K21 are part of
the delivery. K20 is then used in
exhaust air cooling mode for the control
of the „cooling“ valve. K21 is freely
assignable.
ST07:
•
Control output for driving the frequency
converter (0...10 VDC)
ST08:
•
03: +20 VDC supply (max. 20 mA)
USB:
Connection for USB stick for use as a data
logger and for parameter or software updates
10.3.1.2 System-side interfaces
ST1:
•
L1,N and the interlock (safety) system
connection, looped via ST1.2 of the
expansion board
ST11.1:
•
+12 V, GND, CAN-Bus
Inputs
ST09:
•
(0-I): Plug monitoring (12 VDC)
•
(14): Temperature 50 °C (5 VDC)
•
(16): Pump temperature (5 VDC)
ST04-B:
•
Pressure switch in water inlet (230
VAC)
Outputs
ST04-A:
•
Main contactor (230 VAC)
ST05:
•
Flush valve (230 VAC)
ST06:
•
2
nd
load (230 VAC)
Bi-directional
ST12.1:
•
Serial interface for display and opera-
ting panel connection
•
ST 13:
•
Base for adapter board with RS485
interface
