Metz Connect BTR NETCOM CPW-E12 User manual

Functional Description
The cosϕmonitor is used to detect an
underload. Adjustable response value
and response time. It can also be used
together with a frequency converter
(frequency 2 to 200 Hz). Monitoring is
accomplished by recognising the phase
shift between current and voltage. This
phase angle varies according to the load
of the motor. The instrument is
equipped with a green LED for operating
voltage indication and a red LED for
error indication.
Technical Data
Input
nominal voltage 230 V AC
power consumption (max) 1.5 VA
operating voltage range 0.9 - 1.1 x UN
frequency range 2 ... 200 Hz
duty cycle 100 %
input voltage (motor) 230 V AC / 400 V AC
input current min. 0.2 A, max. 10 A
(load current)
load inrush current 100 A (<0.5 s)
setting range cosj 0 .. 0.97 (relative scale)
response time 1 .. 100 s
operating temperature range 0 °C ... +55 °C
storage temperature range -25 °C ... +70 °C
Output
output contact 1 changeover contact
contact material AgNi
switching voltage (max.) 250 V AC
making/breaking capacity 1000 VA
continuous current 4 A
contact fuse 4 A
permissible switching frequency 1200 switching cycles/h
isolation per VDE 0110
rated voltage 250 V AC/DC
overvoltage category III
pollution degree 2
test voltage (coil/contact) 2000 V, 50 Hz 1 min.
EMC test emission per EN 50 081 T1
interference immunity
per EN 50 082 T2
Housing
type of protection (EN 60529) housing IP50,
terminal blocks IP20
wire cross section 2.5 mm²
mounting position any
colour green
weight 170 g
housing dimensions WxHxL 22.5 x 75 x 100 mm
modular without spacing
BTR NETCOM GmbH
Im Tal 2
78176 Blumberg - Deutschland
Phone [phone]
Fax [phone]
www.btr-netcom.com 122006/1/02/PDF/899 100-01
Declaration of Conformity
The device meets the requirements of the CE guidelines.
Conformity was proved. The declaration of conformity is available
at the manufacturer BTR NETCOM GmbH.
Notes Regarding Device Description
These instructions include indications for use and mounting of the
device. In case of questions that cannot be answered with these
instructions please consult supplier or manufacturer.
The indicated installation directions or rules are applicable to the
Federal Republic of Germany. If the device is used in other countries
it applies to the equipment installer or the user to meet the
national directions.
Safety Instructions
Keep the applicable directions for industrial safety and the
prevention of accidents as well as the VDE rules.
Technicians and/or installers are informed that they have to
electrically discharge themselves as prescribed before installation or
maintenance of the devices.
Only qualified personnel shall do mounting and installation work
with the devices, see section “qualified personnel”.
The information of these instructions have to be read and under-
stood by every person using this device.
Symbols
Warning of dangerous electrical voltage
Danger means that non-observance may cause risk of life,
grievous bodily harm or heavy material damage.
Qualified Personnel
Qualified personnel in the sense of these instructions are persons
who are well versed in the use and installation of such devices and
whose professional qualification meets the requirements of their
work.
This includes for example:
GQualification to connect the device according to the VDE specifi-
cations and the local regulations and a qualification to put this
device into operation, to power it down or to activate it by
respecting the internal directions.
GKnowledge of safety rules.
GKnowledge about application and use of the device within the
equipment system etc.
CPW-E12
Motor Monitoring Relay
1102810520 230 V AC - 1 ... 10 A
110281052013 230 V AC - 0.2 ... 2.5 A
Wiring Diagram Function Diagram
Connection Examples
Connection Combined with a Frequency
Converter and a Delta-wye Circuit
Connection to Star-delta Motors

Installation
Electric installation and device termination shall be
done by qualified persons only, by respecting the VDE
specifications and local regulations.
1. Power down the equipment.
2. Strip the wire by 7 mm, put on the end sleeve, insert to
terminal body and tighten the terminal screw with a screwdriver.
Wire cross section:
0.5 mm² - 4 mm² solid wire or
0.5 mm² - 2.5 mm² stranded wire with end sleeve
3. Device connection per wiring diagram.
Mounting
On standard DIN rail per DIN EN 50022 (35 x 7.5 mm), in junction
boxes and/or on distribution panels.
reset push button
3
2
1
5
4
Installation indications
GDo not invert contacts L1 and LM (wrong current direction =>
device is permanently in the alarm mode)
GMeasuring current can be exceeded by max.
10 %, for higher motor current use a suitable current transfor-
mer.
GIf a current transformer is used, observe the
current direction (do not invert k and l!). The
connection L1 on the secondary winding is
mandatory. The CPW is not able to measure without this con-
nection as current cannot flow towards L2 or L3. To measure
the cosj (phase shift difference between current and voltage)
voltage has to be applied at L1.
GIf the current falls below the measuring value
(1 A or 0.2 A) the CPW signals alarm.
GIf a frequency converter is used it is mandatory to install the
CPW behind the frequency converter. It is not possible to mea-
sure a reliable cosϕbefore the frequency converter.
Device Settings
Gturn the rotary time switch (3) to the left
Gturn the rotary cosj switch (5) to the right
Ginstall a bridge between S1 and S3 (error memory switched-off)
Gswitch the motor on and let it run at its lowest speed => red
LED (2) is lighting
Gturn the rotary cosj switch (5) slowly to the left, until the relay
responds and the red LED turns off.
RPM-regulated motors (e.g. with frequency converter or delta-wye
connection) should run through all speeds to provide for reliable
operation. Check also functioning of bypass connections. Test
shut-down by error simulation (take off v-belt or check a pump
under dry running conditions).
When tests are finished install the bridges (error memory push-
button etc.), integrate the relay contacts into the malfunction
indication and set the required time.
Function settings by bridges S1, S2, S3
S1 - S2 open relay released at underload
S1 - S2 bridged relay activated at derating
S1 - S3 open with error memory
S1 - S3 bridged without error memory
With activated error memory (no bridge over S1-S3) the error
signal remains displayed until it is acknowledged or the operation
voltage is interrupted.
A NO contact at S1 - S3 allows a remote reset of the module.
7 mm
Display and Operation
green LED - operating voltage
indication
red LED - error indication
rotary switch for time setting
rotary switch for cosϕsetting
Wiring Diagrams
Connection Examples
Important!
It is essential to consider the wiring diagram of the current con-
verter for the different connection examples!
Pay attention to the minimum current at the CPW-E12!
Connection to Single Phase Motors
Connection to Three Phase Motors
Connection Examples
Wiring Diagram for Current Converter
Connection to Two-stage Motors with
Separate Windings and Current Converter
Connection to Two-stage Motors with
Separate Windings