Pilz ZUZ Data Sheet

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ

Technical Details ZUZ

Electrical data

Measuring voltage = supply voltage AC: 24, 110, 230 V, selectable

Tolerance 75 ... 125 %
Power consumption 300 V AC: 30 ... 40 VA

Switching capability in accordance
with EN 60947-4-1, 10/91 AC1: 250 V/0.1 ... 5 A/1100 VA

EN 60947-5-1, 10/91 AC15: 230 V/2 A; DC13: 24 V/1.5 A
Output contacts 2 auxiliary contacts (C/O)
Contact material AgCdO
Contact fuse protection in accordance 6 A quick or 4 A slow

The ZUZ electronic DC and AC
voltage monitoring relay is designed
for use with generators, accumula­tors etc.

Features

● In-line connection

● Measuring voltage is also the

supply voltage.

● Measuring ranges can be set to
the supply voltage

● Operating voltages can be set

● Overvoltage and undervoltage

can be set separately.

● Normally energised mode

Approvals

ZUZ

●

with EN 60947-5-1, 10/91
Current consumption (current peak AC: 24 V, 200 mA; 42 V, 300 mA
for zero voltage transition) 110 V, 600 mA; 300 V/800 mA

Measuring circuit

Frequency range AC: 50 ... 60 Hz
Adjustable measurement range limit value
Undervoltage Measuring voltage - 25 %
Overvoltage Measuring voltage + 20 %
Hysteresis 2 %
Reaction time max. 700 ms

Environmental data

Ambient temperature -15 ... +55 °C

Mechanical data

Max. cable cross section of ext. conductor 1 x 4 mm2 or 2 x 1.5 mm

Dimensions (H x W x D) 87 x 22.5 x 122 mm
Weight 130 g

Description

The voltage monitoring relay is en­closed in an S-95 slimline housing.
There is 1 version available for AC
or DC operation.
Features:

● Relay outputs: 2 auxiliary
contacts (C/O)

● Setting options
Response value
U

: 75 ... 100 % U

min

Response value
U

: 100 ... 120 % U

max

● 4 supply voltages set using a
rotary switch

● LEDs for switching status of the
relay and supply voltage.

DC: 24 V, selectable

1

24 V DC: 0.5 ... 0.8 W

DC1: 24 V/0.1 ... 5 A/120 W

DC: 24 V, 20 ... 30 mA

2

single-core or multi-core with crimp
connector

The ZUZ operates as a threshold
switch. The response values for
undervoltage and overvoltage can
be set separately. If the measuring
voltage exceeds U
energises. The auxiliary contacts
11-12 and 21-22 are open,
11-14 and 21-24 are closed. If the
measuring voltage exceeds U
or drops below U
de-energised. The auxiliary contacts

B

11-12 and 21-22 close, 11-14 and
21-24 open. The „FAULT“ LED

B

illuminates if UB is outside the
permitted range, i.e. falls below
U

or exceeds U

min

, the relay

min

, the relay is

min

.

max

max

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-141-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ

Internal wiring diagram

A2

A1

(-)

(+)

U

B

U

M

~

G1

=

Timing diagram

U

max

U

B

U

min

0 V

Connection example

11

U

U

min

max

K1

S1

12

21

14

22

24

UM = U

1L1

B

1L2

A1 11

21

14

12

A2

22 24

11-14

11-12

21-24

21-22

Fault

Power

UB > 50 % UB:

The LED “Power” illuminates.

UB > U

:

min

The relay energises, the switching
status LED goes out.

UB > U

:

max

The relay de-energises, the
switching status LED illuminates.

Rest condition:

- Contacts 11-12 and 21-22
closed

- Contacts 11-14 and 21-24
open

Operating condition:

- Contacts 11-12 and 21-22
open

- Contacts 11-14 and 21-24
closed

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-141-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

ZUZ

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 50081-1, 01/92, EN 50082-2, 03/95
Vibration in accordance Frequency: 10 ... 55 Hz,
with EN 60068-2-6, 04/95 Amplitude: 0.35 mm
Climatic suitability IEC 60068-2-3, 1969
Airgap creepage DIN VDE 0110-1, 04/97, 4 kV/3
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

1

Housing: IP 40
Terminals: IP 20

Order references key

UMMeasuring voltage

Order references

Type U

ZUZ 24 VDC, 24, 110, 230 V AC 827 100

M

Order no.

Pilz GmbH & Co. KG, Sichere Automation, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: [phone], Telefax: [phone], E-Mail: [e-mail]

NSG-D-2-141-2005-04