Quick Guide for
WCU
Terminal 1 Internal supply voltage (- gnd) OUT
Terminal 2 Internal supply voltage (+ 24 V DC) OUT
Terminal 3 Actuator: Voltage to motor on actuator (Blue)
Terminal 4 Actuator: Voltage to motor on actuator (Brown)
Terminal 5 Actuator: Supply to Hall-pot (Red)
Terminal 6 Actuator: Signal (0-10V) from hall-pot (Violet)
Terminal 7 Not in use
Terminal 8 Common GND (Black)
Terminal 9 Analogue Input: Actuator set point 4-20mA
Terminal 10 Analogue Output: Actuator position 4-20mA
Terminal 11 Digital Output: Signal from actuator IN
Terminal 12 Digital Output: Signal from actuator OUT
Terminal 13 Digital Output: Error
Terminal 14 Internal voltage +: 5 V OUT
Terminal 15 Digital Input: Signal power fail from battery (WCU UPS)
Terminal 16 Digital Input: Signal Battery fail from battery (WCU UPS)
Terminal 17 Digital Input: Switch Manuel/ Auto
Terminal 18 Digital Input: Run the actuator IN
Terminal 19 Digital Input: Run the actuator OUT
Terminal 20 +24V supply to terminals 16, 17, 18
Terminal 21 Digital Output: Manuel / auto
Terminal 22 Not in use (aux in)
Connection
Start-up/operation
Before starting to use the system, it is important that all
of the motor control unit parameters are set correctly
(see page 28). It is also necessary to perform a HOME
and learn procedure (see “Initial start-up”).
Initial start-up
The first time the system is started up, it is necessary to
perform a HOME followed by a learn- procedure. This
procedure takes place by manually pressing keys on the
PCB at the same time (see below). The procedure is done
in 2 steps:
1. Set the system in manual mode.
2. The HOME procedure is done by pressing all 3 keys
at the same time. After app. 10 sec. the actuator
runs IN to its absolute inner end position. NOTE!
A HOME / learn procedure over rules any stroke
limitation typed in parameter 23 and 24.
3. The learn procedure is done by pressing 2 keys (FW
+ REV) at the same time. After app. 10 sec. the actuator runs OUT. NOTE! Releasing the keys will store
the actual position as “Valve closed” a green LED
on the PCB will lid up showing that the procedure
is done. The display will show “00”. Switch in automatic mode and the system is ready for operation.
NOTE! A HOME- and learn-procedure can done at any
time and the newest position will then be stored and
used.
Press 3
keys at the
same time
for HOME
procedure.
Press two
keys at the
same time
for learn
mode.
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