Zander Aachen SR2C Quick Start Manual

Safety Emergency Stop Relay SR2C
User Information
The SR2C is a universal emergency stop safety switching device

Correct Use

with two safe relay outputs that can quickly and safely stop the
moving parts of a machine or system in case of danger.
Applications for the SR2C include single or dual-channel emer-
gency stop circuits and guard monitoring on machines and sys-
tems.

Features

2 safe, redundant relay outputs
•
• 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
•

Function

The emergency stop safety switching device SR2C is
designed for safe isolation of safety circuits according to
DIN 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 emergency stop circuit 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 detec-
ted by cyclical self-monitoring no later than when the sys-
tem is switched off and switched on again.

Installation

As per DIN EN 60204-1, the device is intended for installa-
tion 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.

Safety Precautions

Installation and commissioning of the device must be
•
performed only by authorized personnel.
• 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 instructi-
ons 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 (4A slow-blow or
•
6A quick-action or 10A gG) must be provided.
• A maximum length of the control lines of 1000 meters
with a line cross section of 0.75 mm
ded.
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 excee-
2
.
info@zander-aachen.de • www.zander-aachen.de
English translation
• Indication of the switching state via LED
2 start behaviors possible:
•
- Monitored manual start
- Automatic start
• Up to PL e, SILCL 3, category 4
Fig. 1 Block diagram SR2C
Fig. 2 Installation/removal
It is not allowed to open the device, tamper with the devi-
•
ce 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:
Fig. 3 Connections
(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
B01
B101
E61-136-00
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