Pilz P1W Data Sheet

Electronic Monitoring Relays

True power monitoring

P1W

Technical Details P1W

Electrical data

Measuring voltage = Supply voltage 3 AC/1 AC: 42, 110, 230, 400, 415, 440,

Tolerance 85 ... 110 %
Power consumption Approx. 5 VA
Switching capability in accordance
with EN 60947-4-1, 10/91 AC1: 240 V/5 A/1200 VA

Output contacts 2 auxiliary contacts (C/O)
Contact fuse protection 6 A quick or 4 A slow
in accordance with EN 60947-5-1, 10/91
Max. switch-on current 10 A

Measuring circuit

Adjustable measuring range limit values 1 A version 0.125; 0.250; 0.375; 0.500;

True power monitor for 1- and
3-phase supplies for monitoring
minimum and maximum true power
values

Features

● Direct measurement of motors

with a 2.2 kW (400 V) rating

● Output signal either latching/

non-latching

● Short, adjustable reaction times

● High level of accuracy

● 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
Requirements for current transformer 1 A version: 1.5 ... 7.5 VA, Class 3

Mechanical data

Max. cross section of external conductor 2 x 2.5 mm

Torque setting for connection terminals 1.2 Nm (screws)
Dimensions (H x W x D) 75 x 90 x 115 mm
Weight 520 g

500, 550 V

DC1: 24 V/1 A/24 W

0.625 A; 0.750; 0.875; 1.0; 1.125 A
5 A version: 0.5; 1; 1.5; 2; 3; 4; 5; 6 A

5 A version: 6 A; 25 A/max. 3 s

5 A version: 1 ... 30 s adjustable

5 A version: 2.5 ... 15 VA, Class 3

2

Single-core or multi-core with crimp
connector

4

Description

The P1W monitors whether true

power falls below or exceeds a
The true power monitor is enclosed
in a 90 mm wide P-75 housing.
Single or three phase AC voltage is
required for operation.
Features:

● Relay outputs:

2 auxiliary contact (C/O)

● 2 versions with adjustable

measuring ranges up to
max. 1 A or up to max. 5 A

● Underload and overload

switching points

● Response delay for under- and

overload can be set separately.

● Adjustable start-up suppression

defined level on AC or 3-phase

current loads. The minimum and

maximum permitted true power

P

and P

min

potentiometers.

are set on separate

max

The P1W determines true power

from the phase voltage and the

measuring current. If the derived

true power exceeds the preset value

P

, the auxiliary contact assigned

max

to P

switches state and the LED

max

is on. If the derived true power falls

below the preset value P

auxiliary contact assigned to P

switches state and the LED is on.

min

, the

min

time

● Automatic or manual reset

● LEDs for supply voltage and

switching status of auxiliary
contacts P

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-235-07/00
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and P

min

max

Electronic Monitoring Relays

True power monitoring

P1W

Block diagram

k

L1

I

M

U

L1

U

I

I

int

n*I

M

I

int

U

L1

L2

L3

Power supply

cos j*k

L1

*

int

*

t

a

+

0

P

P

min

14

12

DP

DP

min

max

&

Control
logic

&

t

r,min

t

r,max

K1

11

Y1

N
Y2

24

22

K2

21

P

&

min-PW

&

P

max-PW

P

max

4

I

Measuring currents

M

n Measuring range factor
U

L1

cos j Power factor

Measuring voltages

Timing diagram

Measuring circuit

Meßkreis

Betriebsspannung

Supply voltage

Ausgang P

Output P

Ruhestromprinzip

Normally energised

Ausgang P

Output P

Ruhestromprinzip

Normally energised

Ausgang P

Output P

Arbeitsstromprinzip

Normally de-energised

Ausgang P

Output P

Arbeitstromprinzip

Normally de-energised

mode

max

mode

mode

max

mode

k Correction factor

Start-up suppression time

t

a

PWTrue power

P

max

P

min

0

U

U

B

11

min

max

11
21

max

21
11

min

max

11

21

max

21

B

0

14
12
24
22

14
12

24
22

t

a

t

r,max

PW > P

max

P
P
t

t

r,min

PW < P

Min. true power

min

Max. true power

max

Response delay

rmin, rmax

min

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-235-07/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1W

Connection examples

● Example 1

Monitoring a three-phase motor, I < 5 A

L1
L2
L3

F2

I

Nominal current

N

PE

11 21

P1W
12 14

N

22

k

Y1

L1

24 U N

● Example 2

Monitoring a three-phase motor; I > 5 A

L1
L2
L3

F1

L2 L3

Y2

K1

UVW

M1

I ≤ 5 A

N

M3~

4

F2

I

Nominal current

N

PE

P1W
12 14

21 Y1

22 U

kN

24

L3L111

L2

k K

T1

l L

Y2N

K1

UVW

M1

I > 5 A

N

M3~

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-235-07/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1W

● Example 3

Monitoring a single-phase motor, I < 5 A

L1
N

F1

L2

L3L111 21 Y1 kN

P1W

2412 14 22 U

Y2N

4

K1

M1

I ≤ 5 A

N

PE

I

Nominal current

N

● Example 4

Monitoring a single-phase motor; I > 5 A

L1

N

F1

P1W
12 14

21 Y1

22 U

kN

24

U1 U2

M 1~

L2

F2

L3L111

k K

T1

l L

Y2N

K1

U1 U2

M1

M 1~

N

Nominal current

I

N

I ≥ 5 A

PE

Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-235-07/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]

Electronic Monitoring Relays

True power monitoring

P1W

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

UBSupply voltage
IMMeasuring current
taStart-up suppression time
trResponse delay

Order references

Type U

P1W 110 VAC 5 A 20 s 3 s 489 515
P1W 230 VAC 5 A 20 s 3 s 489 520
P1W 400 VAC 5 A 20 s 3 s 489 525
P1W 415 VAC 5 A 20 s 3 s 489 530
P1W 440 VAC 5 A 20 s 3 s 489 533
P1W 500 VAC 5 A 20 s 3 s 489 540
P1W 550 VAC 5 A 20 s 3 s 489 545
P1W 230 VAC 1 A 20 s 3 s 489 720
P1W 400 VAC 1 A 20 s 3 s 489 725
P1W 415 VAC 1 A 20 s 3 s 489 730
P1W 500 VAC 1 A 20 s 3 s 489 740
P1W 42 VAC 5 A 20 s 30 s 489 605
P1W 230 VAC 5 A 20 s 30 s 489 620
P1W 400 VAC 5 A 20 s 30 s 489 625
P1W 415 VAC 5 A 20 s 30 s 489 630
P1W 440 VAC 5 A 20 s 30 s 489 633
P1W 500 VAC 5 A 20 s 30 s 489 640
P1W 230 VAC 1 A 20 s 30 s 489 745
P1W 400 VAC 1 A 20 s 30 s 489 825
P1W 440 VAC 1 A 20 s 30 s 489 733
P1W 500 VAC 1 A 20 s 30 s 489 845

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-2-235-07/00
Telefon [phone], Telefax [phone], E-Mail: [e-mail]