Pilz S1UM Data Sheet

Electronic Monitoring Relays

Single-phase voltage monitoring

S1UM

Technical Details S1UM

Electrical data

Supply voltage AC: 24, 42...48, 110...127, 230...240 V

Tolerance 85 ... 110 %
Power consumption AC: 2 VA, DC: 1 W
Switching capability in accordance with
EN 60947-4-1, 10/91 AC1: 240 V/0.1 ... 5 A/1200 VA

EN 60947-5-1, 10/91 AC15: 230 V/2 A; DC13: 24 V/1.5 A
Output contacts 1 auxiliary contact (C/O)
Contact material AgCdO, 3 µm gold plating for low-load

Contact fuse protection in accordance Max. 6 A quick or max. 4 A slow
with EN 60947-5-1, 10/91

The S1UM voltage monitoring relay
is used for monitoring minimum or
maximum voltage values.

Features

● 12 measuring ranges,

0.1 V ... 500 V, selectable

● Reaction time can be set up
to 10 seconds

● Detects AC-/DC voltage values
automatically

● Operates to normally energised
or normally de-energised mode

● AC versions and UP version:
Galvanic isolation between
measuring and supply voltage.

● UP version: Measuring inputs
are not polarity-sensitive

Approvals

S1UM

Measuring circuit

Frequency range 0.40 ... 400 Hz
Adjustable limit values for measuring range 1 V: 1; 0.5 ; 0.2; 0.1 V

Hysteresis 0.6 to 0.95 x response value
Impedance of the measurement inputs 1 V: 15 kΩ

Overload on the measuring inputs 1 V: max. 40 V

Polarity of measuring inputs Polarised

Reaction time 0.1 ... 10 s
Temperature variation ± 0.05% per +1°C

Environmental data

Ambient temperature -15 ... +55 °C

Mechanical data

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

Dimensions (H x W x D) 87 x 22.5 x 122 mm
Weight 165 g

DC: 24 V

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

range 1-50 V/1-100 mA

20 V: 20, 10, 4, 2 V
500 V: 500, 250, 100, 50 V

20 V: 390 kΩ
500 V: 10 MΩ

20 V: max. 200 V
500 V: max. 700 V

UP version: any (not polarity-sensitive)

2

single-core or multi-core with crimp
connector

4

●

●

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

Description

The voltage monitoring relay is
enclosed in an S-95 slimline
housing. There are eight AC versions
and one DC version available.
Features:

● Relay output: 1 auxiliary contact
(C/O)

●

3 measuring circuits for 1 V, 20 V
and 500 V
ranges

● Response value can be set from
20% to 100% of the measuring
range limit value

each with 4 different

● Hysteresis can be set from

● Fault status can be latched or

● LEDs for switching status for the

(Description continued overleaf)

0.6 to 0.95 x U

non-latched

relay and supply voltage.

on

NSG-D-2-009-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

S1UM

The S1UM monitors for voltage
values exceeding a threshold limit.
On the UP version the measuring
inputs are not polarity-sensitive. If
the measured voltage reaches the
response value Uon, the auxiliary
contact 11-14 changes over and the
LED is illuminated. If the measured
voltage falls below the hysteresis
value U
selected, the auxiliary contact
changes over again and the LED
goes out. The unit is ready for
operation again. If faults are latched,
the unit is not ready for operation
again until an external reset button
is activated or the supply voltage
has been switched off and on again.

and automatic reset is

off

4

Internal wiring diagram

U

B

A2

A1

(-)

(+)

~

G1

=

Normally energised
(closed circuit) /
normally de-energised
(open circuit)

S1UM

Normally energised (closed circuit) /
normally de-energised (open circuit)

Y1 Y2 Y3

Latching/Non-latching

Measurement inputs

1V 20V 500V

Store

Auxiliary contact

12 14

K1

11

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

NSG-D-2-009-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

S1UM

Timing diagram

Y2

Y2

Non-latching

Normally de-energised

U

M

U

on

U

off

12

11

11

12

14

11

11

14

LED

Y3

Y3

mode

Normally energised
mode

Latching

Normally de-energised
mode

Hysteresis (U

Adjustable hysteresis

): 0.6 to 0.95 x U

off

tR: Reaction time
Ia: UM > Uon: Once tR has elapsed,

the relay energises and the LED
“OUT” is illuminated.
UM< U
and LED goes out

IIa: UM > U

Relay remains de-energised.

: Relay de-energises

off

before tR has elapsed:

on

Ib: U

on

> Uon: As above, but relay

M

de-energises and LED “Out”
goes out.
UM < U
and LED is illuminated.

: Relay energises

off

IIb:As above but relay remains

energised.

III: UM > Uon: see above

UM < U
once Y2 - Y3 is open.

: Relay de-energises

off

4

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

NSG-D-2-009-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

S1UM

Connection examples

● Example 1
Normally energised,
non-latching

1L1

B

U

1L2

A1 11

500V

1V 20V

Y1

Y2

Y3

A2

12 14

● Example 2
Normally de-energised mode,
non-latching

1L1

B

U

1L2

● Example 3

Normally de-energised mode,
latching

1L1

B

U

1L2

A1 11

500V

20V

U

M

1V

Y1

Y2

12

14

U

M

Y3

A2

● Example 4

Normally energised,
latching

1L1

B

U

1L2

4

A1 11

1V

Y1

12

20V

Y2

14

500V

Y3

A2

A1 11

500V

20V

U

M

1V

Y1

Y2

12

14

U

M

Y3

A2

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

NSG-D-2-009-2005-04

Electronic Monitoring Relays

Single-phase voltage monitoring

S1UM

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
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

UB Supply voltage
UMMeasuring voltage

Order references

Type U

S1UM 24V AC 500 V AC/DC 827 230
S1UM 42-48 V AC 500 V AC/DC 827 240
S1UM 110-130 V AC 500 V AC/DC 827 250
S1UM 230-240 V AC 500 V AC/DC 827 260
S1UM UP 24 V DC 500 V AC/DC 827 225
S1UM UP 24 V AC 500 V AC/DC 827 235
S1UM UP 42-48 V AC 500 V AC/DC 827 245
S1UM UP 110-130 V AC 500 V AC/DC 827 255
S1UM UP 230-240 V AC 500 V AC/DC 827 265

Additional versions available on request

B

U

M

Order no.

4

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

NSG-D-2-009-2005-04