Zander Aachen SR4C Operating Instructions

Time -Del. Emergency Stop Safety Relay SR4C
Operating Instructions
SR4C is an emergency stop safety relay combination that
Correct Use
combines non-time-delayed and time-delayed contacts in a very
compact housing. This permits dangerous components of a
system to be switched off quickly and safely in an emergency
situation. At the same time, other circuits can continue to be
supplied with voltage for up to 30 seconds to allow a tool to be
moved to its idle position or to brake following parts, for
example.
•
4 positively driven safety relays contacts. Possible vari-
ants:
- 3 non-time-delayed and 1 time-delayed contact
- 2 non-time-delayed and 2 time-delayed contact
- 1 non-time-delayed and 3 time-delayed contact
•
Continuously adjustable time delay (1 to 30s).
•
Connection of:
- Emergency stop buttons
- Safety switches
- Non-contacts safety switches
- OSSD-Outputs
•
1- or 2-channel activation possible
•
Feedback loop for monitoring downstream contactors or
expansion modules
Function The moving parts of a machine or system can be quickly
and safely stopped in case of danger with the non-time-
delayed contacts of the SR4C Safety contacts with time-
delay switch-off are also integrated into the SR4C. They
are used whenever it is safer to keep supplying voltage to
parts of a machine after the emergency stop switch is
operated.
It is ensured that a single fault or malfunction does not lead
Fig. 1 Block diagram:
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 Installation and commissioning of the device must be
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.
•
It is not allowed to open the device, tamper with the
device or bypass the safety devices.
•
Electrical Consider the information in the section "Techn. data"
•
Connection
A safe transformer according to EN 61558-2-6 or a
power supply unit with electrical isolation from the mains
must be connected
•
External fusing of the safety contacts must be provided
•
If the device does not function after commissioning, it
must be returned to the manufacturer unopened. Ope-
ning the device will void the warranty
•
Use adequate protective circuit for inductive loads (e.g.
free-wheeling diode)
H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany
Tel +49 (0)241 9105010 • Fax +49 (0)241 91050138 • info@zander-aachen.de • www.zander-aachen.de
SR4C (1nd/3d);
Errors and technical changes reserved
•
Cyclical monitoring of the output contacts
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Indication of the switching state via LED
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2 start behaviors possible:
- monitored manual start
- automatic start
•
Short circuit and earth fault monitoring
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Up to PL e, SILCL 3, category 4
to a loss of the safety function and that every fault is detect-
ed by cyclical self-monitoring no later than when the system
is switched off and switched on again.
The time-delay contacts are activated at the same time as
the non-time-delay contacts; however, when the emergency
stop button is pressed, the contacts are only deactivated
after the time set on the potentiometer (1 ... 30s).
During timeout, no power-loss is accepted.
SR4C (2nd/2d);
Fig. 2 Installation/removal
•
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.
•
Note down the version of the product (see label "Ver: x")
and check it prior to every commissioning of a new de-
vice. If the version has changed, the overall concept of
the control system in which the device is incorporated
must be validated again by the user.
A1:
A2 :
S11:
S10:
S12:
S13:
S14:
S21:
13-14:
23-24/27-28:
33-34/37-38:
47-48:
nd = non-time delayed; d = time-delayed
Fig. 3 Connections
English translation
SR4C (3nd/1d)
Power supply
Power supply
DC 24 V control voltage
Control line
Control line
Control line
Control line
Start control line
Safety contact 1 (nd)
Safety contact 2 (d / nd)
Safety contact 3 (d / nd)
Safety contact 4 (d)
M11
Ver. A
E61-140-00
1