Zander Aachen SR3C User Information

Emergency Stop Safety Relay SR3C AC/DC24V
User Information
The SR3C is a universal emergency stop safety switching device
Correct Use
with three safe relay outputs that can quickly and safely stop the
moving parts of a machine or system in case of danger.
Applications for the SR3C include single or dual-channel emer-
gency stop circuits and guard monitoring on machines and sys-
tems.

Features

• 3 safe, redundant relay outputs
1 auxiliary contact (signaling contact)
Connection of:
•
- Emergency stop buttons
- Safety switches
- Non-contact safety switches
- OSSD-Outputs
Single and dual-channel operation possible
•
Feedback loop for monitoring downstream contactors or
•
expansion modules
• Cyclical monitoring of the output contacts
Indication of the switching state via LED
•

Function

The emergency stop safety switching device SR3C is de-
signed for safe isolation of safety circuits according to EN
60204-1 and can be used up to safety category 4, PL e
according to EN ISO 13849-1.
The internal logical system closes the safety contacts when
the start button is pressed.
If the safety switch is opened, the positively driven safety
contacts are opened and safely switch the machine off. It is
ensured that a single fault does not lead to a loss of the
safety function and that every fault is detected by cyclical
self-monitoring no later than when the system is switched off
and switched on again.

Installation

As per EN 60204-1, the device is intended for installation in
control cabinets with a minimum degree of protection of
IP54. It is mounted on a 35-mm DIN rail according to DIN
EN 60715 TH35.
Installation and commissioning of the device must be
•
Safety
performed only by authorized personnel.
Precautions
• Observe the country-specific regulations when installing
the device.
The electrical connection of the device is only allowed to
•
be made with the device isolated.
• The wiring of the device must comply with the instruc-
tions in this user information, otherwise there is a risk
that the safety function will be lost.
• When the 24V version is used, a control transformer
Electrical
according to EN 61558-2-6 or a power supply unit with
Connection
electrical isolation from the mains must be connected.
External fusing of the safety contacts (6A slow-blow or
•
8A quick-action or 10 A gG) must be provided.
• A maximum length of the control lines of 1000 meters
with a line cross section of 0.75 mm
ceeded.
The line cross section must not exceed 2.5 mm
•
If the device does not function after commissioning, it
•
must be returned to the manufacturer unopened. Ope-
ning the device will void the warranty.
H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • D52070 Aachen • Tel +49 (0)241 9105010 • Fax +49 (0)241 91050138
2
must not be ex-
2
.
info@zander-aachen.de • www.zander-aachen.de
English translation
• 2 start behaviors possible:
- Monitored manual start
- Automatic start
Short circuit and earth fault monitoring
•
• Up to PL e, SILCL 3, category 4
• Version with higher DC breaking capacity possible
Fig. 1 Block diagram SR3C
Fig. 2 Installation / removal
It is not allowed to open the device, tamper with the de-
•
vice or bypass the safety devices.
• All relevant safety regulations and standards are to be
observed.
The overall concept of the control system in which the
•
device is incorporated must be validated by the user.
Failure to observe the safety regulations can result in
•
death, serious injury and serious damage.
A1:
A2 :
S11:
S10:
S21:
S13:
S14:
S12:
13-14:
23-24:
33-34:
41-42:
Fig. 3 Connections
SR3C, Order no. 472173
Germanischer Lloyd
certificate 32915-06HH
(not for plug-in terminals)
Power supply
Power supply
DC 24V control voltage
Control line
Start control line
Control line
Control line
Control line
Safety contact 1
Safety contact 2
Safety contact 3
Auxiliary contact
B01
B101
E61-137-00
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