Pilz P1WM Data Sheet
Electronic Monitoring Relays
True power monitoring
P1WM
Technical Details P1WM
Electrical data
Measuring voltage = supply voltage 3 AC/1 AC: 42, 110, 230, 400, 415, 500,
Tolerance 85 ... 110 %
Power consumption Approx. 5 VA
Switching capability in accordance
with EN 60947-4-1, 10/91 AC1: 240 V/0.1 ... 5 A/1100 VA
Output contacts 1 auxiliary contact (C/O)
Contact fuse protection in accordance 6 A quick or 4 A slow
with EN 60947-5-1, 10/91
Max. switch-on current 10 A AC
Measuring circuit
Adjustable measuring range limit values
True power monitor for 1- and
3-phase supplies for monitoring
maximum true power values
Features
● Direct measurement of motors
with a 2.2 kW (400 V) rating
● Output signal either latching or
non-latching
● Adjustable reaction times
● Trip device if overload occurs
● Operates to normally energised
or normally de-energised mode
● Suitable for current transformers
Max. overload 1 A version: 1.2 A, 6 A/max. 3 s
Response delay 1A version: 0.25 ... 3 s adjustable
Start-up suppression time 0.5 ... 20 s adjustable
Requirement for current transformer 1 A version: 1.5 ... 7.5 VA
Mechanical data
Max. cable cross section 2 x 2.5 mm
of external conductor Single-core or multi-core with crimp
Torque setting for connection terminals 1.2 Nm (screws)
Dimensions (H x W x D) 75 x 90 x 115 mm
Weight 470 g
550 VAC
DC1: 24 V/0.1 ... 1 A/240 W
1 A version:
5 A version: 0 ... 1; 1.1 ... 3; 3.3 ... 5 A
5 A version: 6 A, 25 A/max. 3 s
5 A version: 0.25 ... 30 s adjustable
5 A version: 2.5 ... 15 VA
connector
0...0.35; 0.25...0.7; 0.67...1 A
2
4
Description
The P1WM true power monitor is
enclosed in a 90 mm wide P-75
housing. All three external conductors are used as the supply voltage.
There are 7 versions available for
use with 3-phase AC voltage
supplies.
Features:
● Relay output: 1 auxiliary contact
(C/O)
● 2 versions with adjustable
measuring ranges up to
max. 1 A or up to max. 5 A
● Overload switching points
● Adjustable response delay
● Adjustable start-up suppression
time
● Automatic or manual reset
● LED-display for supply voltage
and switching status of the
auxiliary contacts P
max
The P1WM monitors whether true
power exceeds a defined level in AC
or 3-phase current loads. The signal,
which is proportional to the true
power, is derived by multiplying the
voltage and current. The maximum
permitted true power P
using a potentiometer. If the
measured true power PW exceeds the
preset value P
switches and the red LED will be on.
, the output relay K1
max
max
is set
Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-253-10/00
Telefon +49 (7 11) 34 09-0, Telefax +49 (7 11) 34 09-1 33, E-Mail: pilz.gmbh@pilz.de
Electronic Monitoring Relays
True power monitoring
P1WM
Internal wiring diagram
L1
k
I
I
M
M
U
L1
U
I
I
int
n*I
I
M
int
U(I)
Y1 Y2
L1
L2
L3
Power supply
cos j*k
L1 *
int
*
t
a
+
0
P
& &
P
max
P
max-PW
DP
max
t
r
Control logic
14
12
K1
11
Y3
Y4
Y5
4
W
V
I
Measuring currents
M
n Measuring range factor
UL1Measuring voltages
Timing diagram
Measuring circuit
Operating
voltage U
B
Output P
Output P
(K1, RB)
max
(K1, AB)
max
RB Normally energised mode
AB Normally de-energised mode
P
Response value, overload
max
UL1Measuring voltage at L1
N
cos j Power factor
k Correction factor
Start-up suppression time
t
a
P
max
P
min
0
1
0
1
0
1
0
t
a
I
M
I
int
cos j Power factor
t
r
PW > P
Measuring current
Internal measuring current
max
k Correction factor
PWTrue power
P
Max. True power
max
t
Response delay
r
n Measuring range factor
Start-up suppression time
t
a
t
Response delay
r
Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-253-10/00
Telefon +49 (7 11) 34 09-0, Telefax +49 (7 11) 34 09-1 33, E-Mail: pilz.gmbh@pilz.de
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