Page 1
Safety Gate Monitors
Category 2, EN 954-1
PST 1.1
Safety gate monitor in accordance
with VDE 0113-1, 11/98,
12/97 and IEC 204-1, 11/98.
Features
l Dual-channel wiring via N/C-
N/O combination
l Automatic reset can be selected
l Start-up test after the supply
voltage is applied
Approval
EN 60204-
PST 1.1
l
1,
Description
l 45 mm, P-75 housing, DIN-Rail
l Positive-guided realy outputs:
l Connection for
l Increase in the number of
Technical Details PST 1.1
Electrical Data
Supply Voltage AC: 120, 230 V
DC: 24 V
Tolerance 85 ... 110 %
Power Consumption Approx. 2 W/4 VA
Residual Ripple DC Max. 20 %
Voltage and Current at the 24 VDC, 40 mA
Input Circuits 1/2
Switching Capability in accordance with
EN 60947-4-1 ,01/00 AC1: 240 V/6 A/1500 VA
DC1: 24 V/6 A/150 W
EN 60947-5-1, 08/00 AC15: 230 V/5 A; DC13: 24 V/6 A
(DC13: 6 cycles/min.)
Output Contacts 2 safety contacts (N/O)
Contact Fuse Protection 6 A quick or 4 A slow
(EN 60947-5-1, 08/00)
Times
Delay-on Energisation Approx. 30 ms
Delay-on De-energisation Approx. 30 ms
Recovery Time
Simultaneity channel 1/2 Approx. 4 s
Max. Supply Interruption before 10 ms
De-energisation
Mechanical Data
Torque Setting on Connection Terminals 1.2 Nm (screws)
Maximum Cross Section of 2 x 2.5 mm
External Conductors Single-core or multi-core with
Dimensions (H x W x D) 87 x 45 x 110 mm
Weight AC: 380 g, DC: 280 g
mounting
– 2 safety contacts (N/O)
safety gate limit switch
safety contacts available by
connecting expander modules.
AC: approx. 250 ms, DC: approx. 500 ms
2
crimp connectors
2
Operating Modes
l Dual-channel operation
NSG-D-2-077-03/01
Page 2
Safety Gate Monitors
Category 2, EN 954-1
PST 1.1
2
Internal Wiring Diagram
U
B
A2
A1
(L-)
(L+)
F1
~
G1
=
Function Diagram
U
B
S2
S1
Y1-Y2
+
Feedback
control loop
Y2
Y1
Input circuit
Switch-on logic/
cycle test
S24
Input circuit
S23
K1
Channel 1
Channel 2
K2
Safety
contacts
13 23S12 S11
14 24
– Key
S1/S2: E-STOP or safety gate switch
S3: Reset button
Switch operated
Gate open
Gate closed
l Increase in safety contacts
The number of output contacts can
be increased by using expander
modules or relays/contactors with
positive-guided contacts.
1L1
(1L+)
K4
K3
Y1 Y2
13
14
13-14
t
t
gt0
2
Undefined time period
t0:UB must be supplied at least 500 ms
beofre S2
tg: Simultaneity approx. 4 s
External Wiring
l Example 1
Dual-channel safety gate control with
a limit switch.
S11
S23
S2
S1
S12
S24Y1Y2
t
t
t
g
2
t
3
t
g
2
t
3
t2: Operating cycle is ended via S1
or S2
t3: X1-X2 must be closed at least 500 ms
before S1
1L2
(1L-)
K3 K4
NSG-D-2-077-03/01
Page 3
Safety Gate Monitors
Category 2, EN 954-1
PST 1.1
General Technical Data
Unless stated otherwise in the technical details for the specific unit
Electrical Data
Frequency Range AC 50 ... 60 Hz
Residual Ripple DC 160 %
Contact Material AgSnO
Continuous Duty 100 %
Environmental Data
EM C EN 50081-1, 01/92, EN 61000-6-2, 03/00
Vibration in accordance with Frequency: 10 ... 55 Hz,
EN 60068-2-6, 01/00 Amplitude: 0.35 mm
Climatic Suitability DIN IEC 60068-2-3, 12/86
Airgap Creepage DIN VDE 0110 part 1, 04/97
Ambient Temperature -10 ... +55 °C
Storage Temperature -40 ... +85 °C
Mechanical Data
Torque Setting on Connection Terminals 0.6 Nm (screws)
Mounting Position Any
Housing Material Thermoplast Noryl SE 100
Protection Mounting: IP 54
2
Housing: IP 40
Terminal Range: IP 20
2
The units were tested in accordance with the relevant standards current at
the time of development.
Order References
Type U
PST 1.1 24 V DC 420 090
PST 1.1 120 V AC 420 095
PST 1.1 230 V AC 420 097
B
Order No.
NSG-D-2-077-03/01
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