EN
INSTRUCTION
EPRW
IN20027 REV. B, 2020-04-15
N
No
ottee!! More information about the product can be found in the manual,
which is available for download from www.regincontrols.com
C
Caauuttiioonn!! Read and understand the instruction before using the product.
C
Caauuttiioonn!! Ensure that the installation complies with local safety
regulations.
C
Caauuttiioonn!! Before installation or maintenance, the power supply should first
be disconnected. Installation or maintenance of this unit should only be
carried out by qualified personnel. The manufacturer is not responsible
for any eventual damage or injury caused by inadequate skills during instal-
lation, or through removal of or deactivation of any security devices.
Function
EPRW is a sensor that measures and monitors the output from an
electricity meter, using the electricity meter's built in LED. It reports the
power consumption (W) and the electric energy (kWh) to the receiver
RCW-M32.
The optical eye is placed on an electricity meter marked with a meter
constant in imp/kWh. The optical eye sensor counts the light pulses
from the meter, and sends a signal to the Modbus receiver. The energy
and power consumption can be followed up with a Modbus controller. If
the electricity meter uses a meter constant in kWh/imp, the reported
value from the EPRW must be recalculated.
Commissioning
The sensor must be paired with the receiver RCW-M32 before it can be
used.
For best performance, the optical eye is used in a room with no, or very
low, ambient light.
Technical Data
Supply voltage
Battery AA 1.5V L91 Lithium x 2
Battery life
6 years (calculated on activation every 5 minutes)
Frequency
868 MHz
Operating
temperature
-10...+50°C
Operating humidity
Max. 85 % RH
Protection class
IP30
Dimensions external
(WxHxD)
86 x 86 x 30 mm
Dimensions, optical
eye (WxHxD)
27 x 19 x 17 mm
Cable length
1 m
Installation
Installation of batteries
1. Open the cover by pressing the locking tab carefully with a
screwdriver.
2. Insert two 1.5 V L91 lithium batteries.
2
3
4
1
5
2
+
-
+
-
Number
Description
1
Battery compartments
2
Mounting holes
Number
Description
3
Test button
4
LED light
5
PCB connector for optical eye
Pairing the sensor with the receiver
Look in the receiver instruction (RCW-M32) for information on how to
pair the sensor with the receiver.
Pairing/connection test
The connection to the receiver must be tested before mounting the
sensor:
1. Place the receiver and the sensor at the desired locations.
2. Put the receiver into Programming mode (refer to the RCW-M32
instruction).
3. Perform a
Walk
test: Press the
Test button
on the sensor to see if the
sensor location is within signal range of the receiver. The LED light
will indicate if the sensor is paired with the receiver or not. There
will also be a long beep from the receiver when the sensor is paired
successfully.
LED indications
– 3 flashes (when
Test button
is pressed): The sensor is not paired with
the receiver.
– Flashing (when
Test button
is pressed): The sensor is paired with the
receiver.
– Flash every 4 seconds: Batteries need to be replaced.
Optical eye
The optical eye is magnetic and comes with a magnet for easy mounting
on the electricity meter.
Mounting the sensor
1. Use the mounting holes to mount the sensor on the wall.
2. Plug in the optical eye into the PCB connector. Use the punch outs
in the casing if necessary to have room for the cable.
3. Snap on the cover.
4. Centre the magnet for the optical eye as accurately as possible over
the LED light (imp/kWh) on the electrical meter.
5. Place the optical eye on the magnet over the LED light. The default
value is 1000 impulses/kWh (adjustable with Modbus tool).
Other functions
Pulse reading
EPRW
1
