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 [phone], Telefax [phone], E-Mail: [e-mail]

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 [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1WM

Connection examples

● Example 1

Monitoring a three phase motor, I < 5 A

L1
L2
L3

F1

L3L111 Y1 Y2 kN

L2

P1WM

Y4 Y512 14 Y3 U(I) V

W

K1

UVW

M1

M3~
£ 5 A

I

PE

N

● Example 2

Monitoring a three phase motor(with current converter); I > 5 A

L1
L2
L3

F2

L3L111 Y1 Y2 kN

k K

T1

l L

W

P4B-3NK

P1WM

Y4 Y512 14 Y3

F1

L2

U(I) V

4

K1

UVW

M1

M3~

I > 5 A

PE

N

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-253-10/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1WM

● Example 3

Monitoring a single-phase motor, I < 5 A

L1
N

F1

N

11 Y1

P1WM
12 14

Y2

Y3

Y4Y5U(I)

k

L1

L2 L3

VW

4

K1

M1

PE

● Example 4

Monitoring a single-phase motor; I > 5 A

L1

N

F1

11 Y1NY2

P1WM

Y3

12 14

k

Y4Y5U(I)

L1

L2 L3

VW

U1 U2

M 1~

I £ 5 A

N

F2

k K

T1

l L

K1

U1 U2

M1

M 1~

I ³ 5 A

PE

N

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-253-10/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1WM

General Details

Unless stated otherwise in the technical details for the specific unit.

Electrical data

AC frequency range 50 ... 60 Hz
DC residual ripple 160 %
Contact material AgCdO
Continuous duty 100 %

Environmental data

EMC EN 50 081-1, 01/92; EN 50.082-2, 03/95
Vibration in accordance
with EN 60068-2-6, 04/95 Frequency: 10 ... 55 Hz,

Climatic suitability IEC 60068-2-3, 1969
Airgap creepage DIN VDE 0110-1, 04/97
Ambient temperature -10 ... +55 °C
Storage temperature -40 ... +85 °C

Mechanical data

Torque setting for connection terminals 0.6 Nm (screws)
Mounting position Any
Housing material Thermoplastic Noryl SE 100
Protection types Mounting: IP 54

Amplitude: 0.35 mm

Housing: IP 40
Terminals: IP 20

Order references key

U BSupply voltage
I MMeasuring current
taStart-up suppression time
trResponse delay

Order references

Type U

P1WM 110 VAC 5 A 20 s 3 s 489 003
P1WM 230 VAC 5 A 20 s 3 s 489 005
P1WM 400 VAC 5 A 20 s 3 s 489 010
P1WM 415 VAC 5 A 20 s 3 s 489 012
P1WM 440 VAC 5 A 20 s 3 s 489 015
P1WM 500 VAC 5 A 20 s 3 s 489 020
P1WM 550 VAC 5 A 20 s 3 s 489 025
P1WM 230 VAC 5 A 20 s 30 s 489 030
P1WM 400 VAC 5 A 20 s 30 s 489 035
P1WM 415 VAC 5 A 20 s 30 s 489 040
P1WM 500 VAC 5 A 20 s 30 s 489 045
P1WM 550 VAC 1 A 20 s 30 s 489 225
P1WM 400 VAC 1 A 20 s 3 s 489 230
P1WM 400 VAC 1 A 20 s 30 s 489 235
P1WM 500 VAC 1 A 20 s 3 s 489 250
P1WM 42 VAC 1 A 20 s 3 s 489 290
P1WM 415 VAC 1 A 20 s 3 s 489 294

Additional versions available on request

B

I

M

t

a

t

r

Order no.

4

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-253-10/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]