Zander Aachen SR7D User Manual

Safety Coupling Relay SR7D
User Manual
SR7D is a safety coupling relay/safety switchgear with seven safe
Correct Use
relay contacts for fast and safe shutdown of hazardous plant
components in the event of danger. It can be used in particular
for furnaces and thermal process plants.
The device can be operated as a coupling relay for connection to
safe semiconductor outputs (e.g. output of a safety PLC). Due to
the integrated self-monitoring, no feedback loop is required for
error monitoring.
The SR7D is specially designed and certified for the use on
furnaces and thermal process plants in continuous operation
according to EN 50156-1 and EN 746-2.
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7 safety contacts
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4 auxiliary contacts (relay); 2 solid-state auxiliary outputs
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Connection of sensors for e.g.:
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- temperature
- pressure
- volume flow
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Control: single or dual channel
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Can be used as emergency stop relay with separate
safety circuit
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Feedback loop for external contactors or extension
modules
Function The safety emergency stop relay SR7D is designed for the
safe isolation of safety circuits in accordance with EN
60204-1 and thus performs the safety-related stop function
up to PL e / SIL 3 in accordance with EN ISO 13849-1 /
IEC 61508. If the emergency stop circuit (e.g. safety door
or emergency stop button) is closed, the machine can be
enabled via the SR7D. When the safety function is reques-
ted via the emergency stop circuit (e.g. safety door open),
the enable current paths of the SR7D are opened immedia-
tely and thus safely switch off the machine. The redundant
use of forcibly guided relays ensures that a single fault
within the device does not lead to the loss of the safety
function and that this is detected by cyclical self-monitoring
the next time the safety function is requested.
The operating status of the device is signalled via the
Installation As per EN 60204-1, the device is intended for installation in
control cabinets with a minimum degree of protection of
IP54. The following should be noted:
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Mounting on 35 mm rail according to EN 60715 TH35
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Ensure sufficient heat dissipation in the control cabinet
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Maximum permissible total thermal according to load
curves
Note: Spacer from ZANDER AACHEN (Art. No. 472596)
for defined distances - See section Accessories.
•
Installation and commissioning of the device must be
Safety
performed only by authorized personnel and who has
Precautions
read and understood this operating instructions.
•
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 operating instructions, otherwise there is a
risk that the safety function will be lost.
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The contact protection and the insulation of the supply
cables must be designed for the highest voltage to the
device.
•
It is not allowed to open the device, tamper with the
device or bypass the safety devices.
•
Electrical A safety transformer according to EN 61558-2-6 or a
power supply unit with electrical isolation from the mains
Connection
must be connected
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Observe the instructions in the section "Tech. Data"
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Use adequate protective circuit for inductive loads (e.g.
free-wheeling diode)
•
If the device does not function after commissioning, it
must be returned to the manufacturer unopened. Open-
ing the device will void the warranty
•
The auxiliary outputs 81-82, 91-92, 101-102, 101-112
and O1, O2 may not be used as safety contacts
H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aachen • Germany
Tel +49 241 9105010 • Fax +49 241 91050138 • info@zander-aachen.de • www.zander-aachen.de
Errors and technical changes reserved
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Cyclical monitoring of the output contacts
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LED indicators for power and status channel 1 and 2
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2 start modes:
- monitored manual start
- automatic start
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Short-circuit monitoring and earth fault monitoring
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Up to PL e, SIL 3, category 4
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Stop category: 0
semiconductor monitoring outputs O1 and O2 (reference
potential: 0V terminal).
O1: Device ready for operation, PWR (UB) applied.
O2: Both relays K1 and K2 are switched on.
Fig. 1 Block diagram SR7D
Fig. 2 Mounting / Demounting
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All relevant safety regulations and standards are to be
observed.
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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.")
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.
•
The year of manufacture can be found on the type label
on the device. It is located at the end of the line of the
voltage specification, below the ID number.
A1:
A2 :
S11:
S10:
S12:
S13:
S14:
S21:
O1;O2:
0V:
81-82:
91-92:
101-102: Auxiliary contact
101-112: Auxiliary contact
13-14 ..
73-74:
Fig. 3 Terminals
English Translation
Power Supply
Power Supply
DC 24 V control voltage
Control line
Control line
Control line
Control line
Control line Start
Solid-state aux. outputs
Ref. potential O1/O2
Auxiliary contact
Auxiliary contact
S05A
Ver. A
Safety contacts 1 to 7 E61-358-00
1