ENGLISH
7
free SPDT (single pole, double throw) contacts, max. switch rating
250 V – 1 A, DC power output 24 V.
Sensor P:
Terminals for wiring connections to pressure or float switch respec-
tively for On/Off pump control.
TLS:
Terminals for wiring to low water cut-out or overflow alarm respec-
tively. The differing possibilities of dry-run protection and their res-
pective wiring are depicted in Fig. 3.
WSK:
Terminals for wiring to motor integrated overload protection devices
WSK (thermal winding contacts) or PTC-sensors. Hook switches
and potentiometers located on the unit board must be set for the
different unit functions. These are described in Chart 1.
6 Commissioning
All functional adjustments on the ER1(-A) control unit as laid out in
Chart II must have been set prior to initially starting-up of the connec-
ted pump plant.
7 Maintenance
The control unit is maintenance-free.
8 Faults - Causes and Remedies
Blinking green light:
Motor overload cut-out has responded.
No automatic reset after rectification of fault cause.
To reset: Switch selector switch to “0”
Red light On:
Switch-off due to low-water or overflow respectively.
Automatic reset after rectification of fault cause.
Reset is also possible by switching the selector switch to “0”.
SSM:
On each fault event and overflow alarm.
If the fault cannot be remedied please contact your Installer or
your nearest WILO service.
Technical modifications reserved!
Chart 2: Settings of hook switches and potentiometers for different applications
Switch/Pot. Pressure boosting Fire services Waste disposal**
S 2 *0* *1* 0
S 3001
S 4001
S 6 top top bottom
6P1 (R 10) see motor name plate
6P2 (R 27) 2 2 0
6P3 (R 48) 0.5 0.5 0
** 0
→ Hook switch open, 1 → Hook switch closed
** Factory settings
Chart 1: Functions of hook switches and potentiometer (Fig. 2)
Switch/Pot. Functions
S 2 Effect reversal for sensor input:
S 2 open: Pump runs on closed sensor contacts
S 2 closed: Pump runs on open sensor contacts
S 3 Test run:
S 3 open: Test run activated
S 3 closed: Test run deactivated
S 4 Effect reversal for TLS input:
S 4 open: Pump stops on low water (pressure boosting)
S 4 closed: Pump starts on overflow (submersible pump)
S 5 Switch is not active with standard design
S 6 Effect reversal for the TLS input
S 6 top closed: Pump stops on low water
S 6 bottom closed: Pump starts on overflow
S 7 Switch for function extension Output option
P 1 Setting to suit motor full load current
P 2 Time delay after pump stop command (0 - 2 min)
P 3 Time delay for stop on low water / start on overflow
To Next Page
Loading...
