Datasheet
Electronic monitoring relays PMDsrange
Pilz GmbH & Co. KG, Felix-Wankel-Straße 2, 73760 Ostfildern, Germany
Telephone: +49 711 3409-0, Telefax: +49 711 3409-133, E-Mail: pilz.gmbh@pilz.de
Three-phase voltage monitoring
S3UM
NSG-D-2-030-2009-09
Altdaten CMT
The S3UM voltage monitoring relay is
used to monitor overvoltage and und-
ervoltage as well as the phase se-
quence in 3-phase supplies.
Approvals
Zulassungen
Unit features
Altdaten CMT
` Monitors supplies with and without
neutral conductors
` Trip device for undervoltage and
overvoltage
` Evaluates phase sequence
` Detects asymmetry
` Detects phase failure
` Reaction time can be set to up to
10 s
` Operates to normally energised or
normally de-energised mode
Description
The voltage monitoring relay is en-
closed in an S-95, slimline housing.
Various versions are available for AC
and DC operation.
Features
` Relay outputs: 1 auxiliary contact
(C/O)
` 2 measuring circuits
` Undervoltage value can be set from
75 % to 100 % of the rated mains
voltage or from 40 % to 100 % (unit
type)
` Overvoltage value can be set from
100 % to 120 % of the rated mains
voltage
` Fault status can be latching or non-
latching
` LED as supply voltage indicator
` LED for all faults: phase sequence
error, under/overvoltage
` Phase failure is detected even when
there is voltage feedback from con-
nected loads
` Range switching 10 % for L1-L3
` Separate supply voltage A1-A2
Approvals for unit types up to 240 VAC
Internal wiring diagram
MR: Manual reset, AR: Automatic reset
S3UM
~
=
A1 A2 L1 L2 L3 N
Y3 Y2
Y1 12 14
G1
Power
U
B
U
M
Reset
MR/AR
Fault
U
min
/U
max
100-120 % U
B
U
1-3
40/75-100 % U
B
U
B
10 %
K1
t
R
11
Ruhe-/Arbeitsstrom
Normally energised/de-energised
Mode retombée/excitation
Corriente de trabajo/reposo
Corrente di riposo/di lavoro
Rust-/Arbeidsstroom
Umschaltung
Switching
Commutation
Commutación
Commutazione
Omschakeling
Umformung
Transformer
Conversion
Transformación
Transformazione
Omzetting
Erkennung
Detection
Détection
Detección
Riconoscimento
Detectie
Skala/Scale/Echelle/
Escala/Scala/Schaal
~
=
A1 A2 L1 L2 L3 N
Y3 Y2
Y1 12 14
G1
Power
U
B
U
M
Reset
MR/AR
Fault
U
min
/U
max
100-120 % U
B
U
1-3
40/75-100 % U
B
U
B
10 %
K1
t
R
11
Ruhe-/Arbeitsstrom
Normally energised/de-energised
Mode retombée/excitation
Corriente de trabajo/reposo
Corrente di riposo/di lavoro
Rust-/Arbeidsstroom
Umschaltung
Switching
Commutation
Commutación
Commutazione
Omschakeling
Umformung
Transformer
Conversion
Transformación
Transformazione
Omzetting
Erkennung
Detection
Détection
Detección
Riconoscimento
Detectie
Skala/Scale/Echelle/
Escala/Scala/Schaal