Pilz ZUZ S Data Sheet
Electronic Monitoring Relays
Single-phase voltage monitoring
ZUZ S
Technical Details ZUZ S
Electrical data
Measuring voltage = supply voltage AC: 42, 48, 120, 240 V (can be selected)
Tolerance 75 ... 125 %
Power consumption 300 VAC: 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
with EN 60947-5-1, 10/91
Power consumption (current peak after AC: 24 V/200 mA; 42 V/300 mA;
The electronic AC voltage monitoring
relay ZUZ S is suitable for generators.
Features
● In-line connection
● Measuring voltage is also the
supply voltage
● Measuring ranges are determi-
ned by the supply
● Different operating voltages can
be selected
● Undervoltage and overvoltage
can be set separately
● Normally energised mode
zero voltage transition) 110 V/600 mA; 300 V/800 mA
Measuring circuit
Frequency range AC: 50 ... 60 Hz
Adjustable limit values for measur. range
Under voltage Measuring voltage - 25 %
Overvoltage voltage Measuring voltage + 20 %
Hysteresis 2 %
Reaction time Max. 700 ms
Environmental data
Ambient temperature -15 ... +55 °C
Mechanical data
Max. cable crosssection 1 x 4 mm² or 2 x 1.5 mm
of external conductor Single-core or multi-core with crimp
Dimensions (H x W x D) 87 x 22.5 x 122 mm
Weight 130 g
1
DC1: 24 V/0.1 ... 5 A/120 W
2
connector
Description
The voltage monitoring relay is enclosed in an S-95 slimline housing.
1 version is available for operation
with 4 AC-voltage levels.
Features:
● Relay outputs: 2 auxiliary contacts
(C/O)
● Setting options
Response value U
Response value U
● 4 supply voltage levels can be set
: 75...100 % U
min
: 100...120 % U
max
using a rotary switch
● LEDs for switching status of the
relay and supply voltage.
The ZUZ S is used as a threshold
value switch. The response values for
undervoltage and overvoltage can
be set separately. If the measuring
voltage exceeds U
changes to the operating status.
, the relay
min
Auxiliary contacts 11-12 and 21-22
open and 11-14 and 21-24 close.
If the measuring voltage exceeds
U
or falls below U
max
changes to the rest condition.
, the relay
min
Auxiliary contacts 11-12 and 21-22
close and 11-14 and 21-14 open.
The LED “FAULT” is illuminated if U
is outside the permitted range, i.e.
falls below U
B
B
or exceeds U
min
max
B
.
Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-226-09/00
Telefon +49 (7 11) 34 09-0, Telefax +49 (7 11) 34 09-1 33, E-Mail: pilz.gmbh@pilz.de
Electronic Monitoring Relays
Single-phase voltage monitoring
ZUZ S
Internal wiring diagram
A2
A1
(-)
(+)
U
B
U
M
~
G1
=
Timing diagram
U
max
U
B
U
min
0 V
U
minUmax
S1
Connection example
= U
1L1
B
1L2
A1 11
21
14
12
A2
22 24
11
21
K1
12
14
22
24
U
M
11-14
11-12
21-24
21-22
Fault
Power
UB > 50 % UB:
The LED “mains monitoring”
is on.
UB > U
:
min
The relay changes to operating
status, the switching status LED
goes out.
UB > U
:
max
The relay changes to the rest
condition, the switching status
LED goes on.
Rest condition
- Contact 11-12 and 21-22
are closed
- Contact 11-14 and 21-24
are open
Operating status:
- Contact 11-12 and 21-22
are open
- Contact 11-14 and 21-24
are closed
Pilz GmbH & Co., Felix-Wankel-Straße 2, 73760 Ostfildern, Deutschland NSG-D-2-226-09/00
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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