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: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
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: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
NSG-D-2-141-2005-04
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