en
w
max
min
0
1
2
3
4
5
6
w
max
min
Off
1
0
2,5 3
w
max
min
Off
0 0.5
6.2
Digital input
Input for potential-free contact or 24 V digital signal of an external control (e.g. PLC).
The following functions can be selected and activated via the digital input of the module:
Ext. OFF:
•
Contact open (or 0 V applied): Pump off.
•
Contact closed (or 24 V applied): Pump is working in control mode.
Ext. MIN:
•
Contact open (or 0 V applied): Pump is working in control mode.
•
Contact closed (or 24 V applied): Pump runs at set, reduced speed (night setback).
Ext. MAX:
•
Contact open (or 0 V applied): Pump is working in control mode.
•
Contact closed (or 24 V applied): Pump is running with maximum speed.
6.3
Digital output (changeover contact relay)
The relay signals operating states depending on the configuration. The following functions can be selected:
SSM:
The signal for the collective fault signal (SSM) is available at the potential-free NC contact (COM - NC).
SSM can only signal as fault "SSM only errors", or fault and warnings "SSM err & warn.". The selection is made
in the configuration of the module via the pump controls.
36
0-10V no off
Setpoint adjustment of the selected control mode without
switching off the pump.
0 V < U < 10 V: Setpoint varies between minimum and maxi-
mum value (linear)
7
8
9
10
U/V
2-10V CB detec.
Setpoint adjustment of the selected control mode with cable
break detection.
U < 1 V: Cable break detected; pump runs at configured set-
point (emergency operation)
1 V < U < 2.5 V: Pump stops
2.5 V < U < 3 V: Pump runs at minimum setpoint
10
U/V
3 V < U <10 V: Setpoint varies between minimum and maxi-
mum value (linear)
10-0V solar
Setpoint adjustment of the selected control mode.
U < 0.5 V: Pump runs at maximum setpoint
0.5 V < U < 8.5 V: Setpoint decreases linearly from maximum to
minimum value
8.5 V < U < 9.3 V: Pump runs at minimum setpoint (operation)
8.5 V < U < 8.8 V: Pump runs at minimum setpoint (start)
8.5 8.8 9.3
10
U/V
9.3 V < U < 10 V: Pump stops
Installation and operating instructions • Wilo-Connect module BMS • Ed.02/2023-10