General; Safety Notes; Transport And Storage; Description Of The Product And Accessories - Wilo ER 1 Instrucciones De Instalación Y Servicio

ENGLISH

1 General

Installation and commissioning by qualified personnel only!
1.1 Fields of application
Switch unit for the automatic control of lower capacity single pump
units
– for water supply plants
– for fire fighting services
– for submersible pumps
1.2 Product data
1.2.1 Technical data
Power supply requirements: 1~230 V ± 10 %, 50/60 Hz,
Max. switch rating:
Degree of protection:
Supply side fuses:
Ambient temperature:

2 Safety Notes

Safety reference and regulations as laid down in the Installation
and Operating Instructions of the pump to be connected must
be referred to and strictly complied with.

3 Transport and Storage

ATTENTION! The unit must be protected from moisture and
mechanical damage due to impact or shock.
Electronic components must not be subjected to
temperatures outside the limits from 10°C to 50°C.

4 Description of the Product and Accessories

4.1 Unit front panel (Fig.1)
The CO-ER (1) switch unit serves to automatically control the pump
capacity. The unit front panel contains the following switches or signals
respectively:
– 3-pole Main switch (Item 1) (L1, L2, L3)
0 OFF
I ON
– Selector switch (Item 2)
Automatic Automatic operation with all safety functions, electro-
nic motor overload protection, low-water cut-out or overflow alarm
respectively
0 OFF
Manual operation; pump switch-on independent of current
system pressure and without safety functions. WSK (thermal winding
contacts) function remains activated. This switch setting is intended
for test operation only; manual operation runs for approx. 2 minutes
and will then automatically switch-off.
– RUN-light (Item 3): Continual green light indicates proper pump
operation, blinking green light indicates a motor fault.
– FAULT-light (Item 4): Red light to indicate a fault in the water circula-
ting system.
4.2 Unit functions (Fig.2)
– Integrated electronic overload protection: To safeguard against
motor overloading it is necessary to set the overload cut-out at the
potentiometer P1 to the FLC-value of the pump/motor. Terminals
WSK must then be bridged.
– External overload protection WSK/PTC: If the motor is equipped
with integrated thermal windings contacts (WSK) or with PTC-sensor
the potentiometer P1 must be set to its maximum value (righthand
limit).
– Time-delayed switch-off: The automatic switch-off on sensor com-
mand can be time-delayed. The time-delay is set by means of
potentiometer P2 between 0 and 2 minutes.
– TLS (dry-run protection): Pumps used in conjunction with water sup-
ply or fire services systems must not be allowed to run dry. A float
switch (WA 65/95) or immersion probes are to be fitted to the mains
6
3~230 V ± 10 %, 50/60 Hz,
3~400 V ± 10 %, 50/60 Hz,
P2 ≤ 4 kW
(max. current 10 A)
IP 41
16 A, AC 3
0 – 40° C
water break tank to switch off the pump if the water level drops
below minimum switch setting.
– Overflow alarm: The unit electronics for dry-run protection can also
be utilized for overflow alarm in conjunction with submersible
pumps. This requires switch action reversal by resetting the hook
switch (see Chart 2). On closing of the float contacts the red fault
light will be on, SSM (collective fault signal) will act as an alarm. The
pump however will continue to run. Reset is automatic on ceasing of
overflow.
– TLS time delay: Pump switch off action by the low-water cut-out as
well as restart after resetting the fault signal can be time-delayed.
The delay time can be set at potentiometer P3 between 2 seconds
and 2 minutes.
– Test run: When set to "Test run" the pump will start automatically
after each 10 hours standstill to run for 10 seconds. This is e.g.
important in the case of fire fighting services to ensure the functions
readiness of the pump. Test run can be eliminated by closing the
hook switch S 3.
4.3 Scope of supply
Control unit ER 1 (-A)
(ER 1-A: 2 float switches and a klaxon)
O. & M. Manual

5 Siting/Installation

5.1 Installation
The control unit is wall-mounted with wall plugs and 4 mm fixing
screws. The intermediate frame serves as a template to mark-off plug
holes.
5.2 Electrical wiring (Fig. 2)
All electrical site works to be carried out by qualified and
locally licenced tradesman in strict accordance with locally
ruling regulations.
– Power supply and voltage must correspond to the name plate speci-
fication of the pump/motor to be connected.
– Locally ruling earthing regulation must be strictly complied with.
– Power cable for three-phase supply: 4 x 1.5 mm
2
3 x 1.5 mm .
– Note regarding the screwless terminals: Fig. 4 depicts how to open
the terminals with the aid of a screwdriver. Any one terminal can only
be connected to one lead respectively.
– Wiring connections to the terminal strip is as follows:
(L), (N), PE:
Mains power connection 1~230 V,
Terminals at X4 to be bridged according to reference "230 V" on the
board.
L1, L2, L3, PE:
Mains power connection 3~400 V,
Terminals at X4 to be bridged according to reference "400 V" on the
board.
(Factory settings)
L1, L2, L3, PE:
Mains power connection 3~230 V,
Terminals at X4 to be bridged according to reference "230 V" on the
board.
U, V, PE:
Terminals for single phase wiring to pump/motor.
U, V, W, PE:
Terminals for three phase wiring to pump/motor.
SBM:
Terminals for remote collective Run signal, volt-free NC (normally-
open) contacts, max. switch rating 250 V – 1 A. Contacts are closed
with motor running.
SSM:
Terminals for remote collective Fault signal, volt-free SPDT (single
pole, double throw) contacts, max. switch rating 250 V – 1 A, e.g.
for wiring to a klaxon.
Option / 24 V:
Terminals for future function extensions, e.g. for the control of a
remotely located Y-∆ starter for motors of larger power rating. Volt-
2
, for single phase: