English
78 WILO SE 05/2015
Connection terminal assignment
Tab. 3: Connection terminal assignment
Designation Assignment Notes
L1, L2, L3
Mains connection voltage 3~380 V AC -3~440 V AC, 50/60 Hz, IEC 38
(PE)
Protective conductor connec-
tion
In1
(1) (input)
Actual value input Type of signal: Voltage (0–10 V, 2–10 V)
Input resistance: R
i
≥ 10 kΩ
Type of signal: Current (0-20 mA, 4-20 mA)
Input resistance: R
i
= 500 Ω
Can be configured in the service menu <5.3.0.0>
Connected at the factory via the M12 threaded cable connec-
tion (Fig. 2), via (1), (2), (3) according to the sensor cable des-
ignations (1,2,3).
In2
(Input)
Setpoint input In2 can be used as the input for remote setpoint adjustment
in all operating modes.
Type of signal: Voltage (0–10 V, 2–10 V)
Input resistance: R
i
≥ 10 kΩ
Type of signal: Current (0-20 mA, 4-20 mA)
Input resistance: R
i
= 500 Ω
Can be configured in the service menu <5.4.0.0>
GND (2)
Earth connections For both input In1 and In2
+ 24 V (3) (output) DC voltage for an ext. consumer/
sensor
Max. load 60 mA The voltage is short-circuit proof.
Contact load: 24 V DC/10 mA
AUX
External pump cycling Pump cycling can be performed using an external, potential-
free contact. One-time bridging of the two terminals will
cause external pumping to take place, if it is enabled. Bridging
a second time will cause the procedure to repeat, provided
the minimum run time is adhered to.
Can be configured in the service menu <5.1.3.2>
Contact load: 24 V DC/10 mA
MP
Multi Pump Interface for dual pump function
Ext. off Control input “Overriding off”
for external, potential-free
switch
The pump can be switched on/off via the external potential-
free contact.
In systems with a high switching frequency (> 20 on/off
operations per day); switching on/off must take place via
“External off”.
Can be configured in the service menu <5.1.7.0>
Contact load: 24 V DC/10 mA
SBM
Individual run signal/collective
run signal, readiness signal and
mains On signal
Potential-free individual run signal/collective run signal
(changeover contact), operation readiness signal is available
at the SBM terminals (menus <5.1.6.0>, <5.7.6.0>).
Contact load: minimum permitted: 12 V DC, 10 mA,
maximum permitted: 250 V AC/24 V DC, 1 A
SSM
Individual/collective fault signal Potential-free single/collective fault signal (changeover con-
tact) is available at the SSM terminals (menu <5.1.5.0>).
Contact load minimum permitted: 12 V DC, 10 mA,
maximum permitted: 250 V AC/24 V DC, 1 A
Interface
IF-Module
Connection terminals of the
serial digital BA interface
The optional IF-Module is pushed into a multi-plug in the ter-
minal box.
The connection is twist proof.
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