Zander Aachen SR7C User manual

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aache • Germa y
Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de
1
Emergency Stop Safety Relay SR7C
M03
Ver. A
E61-141-00
Operating Instructions English translation
Errors and technical changes reserved
The SR7C is a universal emergency stop safety switching device
with seven safe relay outputs that can quickly and safely stop the
moving parts of a machine or system in case of danger
Applications for the SR7C include single or dual-channel emer-
gency stop circuits and guard monitoring on machines and sys-
tems
Function
The emergency stop safety switching device SR7C is
designed 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.
The operating status of the device is indicate by the auxilia-
ry transistor outputs O1 and O2.
O1: Ready. PWR is connected.
O2: Both relay channel K1, K2 are switched on.
Electrical
Connection
• Consider the information in the section "Techn. data"
• A safe transformer according to IEC 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)
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.
Safety
Precautions
Fig. 1 Block diagramm SR7C
Fig. 2 I stallatio / removal
Fig. 3 Co ectio s
A1: Power Supply
A2 : Power Supplay
S11: DC 24V control voltage
S10: Control line
S12: Control line
S13: Control line
S14: Control line
S21: Start, Control line
O1;O2: Aux transistor outputs
0V: Reference common O1, O2
81-82: Auxiliary Contact
91-92: Auxiliary Contact
101-102: Auxiliary Contact
101-112: Auxiliary Contact
13-14 bis 73-74:
Safety Out1-7
• 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.
• 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 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.
• 7 safe, redundant relay outputs
• 4 auxiliary relay and 2 auxiliary semiconductor outputs
• Connection of:
- Emergency stop buttons
- Safety switches
- Non-contact safety switches
- OSSD-Outputs
• Single or dual-channel operation possible
• Feedback loop for monitoring downstream contactors or
expansion modules
• Cyclical monitoring of the output contacts
• Indication of the swiching state via LED
• 2 start behavior possible:
- Monitored manual start
- Automatic start
• Up to PL e, SILCL 3, category 4
• STOP-category: 0
Correct Use

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aache • Germa y
Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de
2
Emergency Stop Safety Relay SR7C
M03
Ver. A
E61-141-00
Operating Instructions English translation
Errors and technical changes reserved
Note: The items listed under “Electrical connection” must be observed during commissioning.
Commissioning
Procedure
1. Wiring emergency stop circuit:
Wire the emergency stop circuit according to the required
Performance Level determined (see Fig. 1 to Fig. 5).
2. Wiring start circuit:
Wire the start circuit according to Fig. 6 or Fig. 7 to set the
starting behavior.
Warning:
If “Automatic start” is set, bear in mind that the safety con-
tacts will switch immediately after the power supply is
connected. If “Monitored manual start” is set, the start
button must be opened after wiring.
3. Wiring feedback loop:
If your application provides for external contactors or ex-
pansion modules, connect them to the device according to
Fig. 8 or Fig. 9.
4. Wiring power supply:
Connect the power supply to terminals A1 and A2 (Fig. 10).
Warning: Wiring only in de-energized state.
5. Starting the device:
Switch on the operating voltage.
Warning:
If the “Automatic start” starting behavior is set, the safety
contacts will close immediately.
If the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
LEDs K1 and K2 are lit.
6. Triggering safety function:
Open the emergency stop circuit by actuating the connected
safety switch. The safety contacts open immediately.
7. Reactivation:
Close the emergency stop circuit. If “Automatic start” is
selected, the safety contacts will close immediately.
If the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
Fig. 6:
Monitored manual start.
It is monitored that the start button
was opened before the emer-
gency stop button closes.
(Prerequisite: operating voltage
must not be interrupted.)
Fig. 7:
Automatic start.
Max permitted delay during
closing of the safety switches on
S12 and S13:
S12 before S13: 300 ms
S13 before S12: any
Warning:
Safety contacts switch
immediately when the
power supply is connected.
Depending on the application or the result of the risk assessment according to EN ISO 13849-1, the device must be wired as
shown in Fig. 1 to Fig. 11.
Applications
Fig. 3:
Single-channel emergency stop
circuit with earth fault monitoring.
(category 1, up to PL c)
Fig. 2:
Two-channel emergency stop
circuit with earth fault monitoring.
(category 3, up to PL d)
Fig. 1:
Two-channel emergency stop
circuit with short circuit and earth
fault monitoring.
(category 4, up to PL e)
Fig. 4:
Two-channel sliding guard
monitoring with short circuit and
earth fault monitoring.
(category 4, up to PL e)
Emergency Stop
Circuit
Starting Behavior
Warning only for the 24V version:
In order to activate earth fault monitoring, the PE must be
connected only to the power supply unit in accordance with
EN60204-1.
Corresponded to the application, the starting circuit have to
be wired according to Fig. 6 or Fig. 7.
Fig. 5:
Two-channel emergency stop with
pnp-outputs/OSSD-outputs
with short circuit monitoring.
(category 4, up to PL e)
Fig. 8:
Feedback loop for monitored
manual start:
The feedback loop monitors
contactors or the expansion
modules.
Feedback Loop
Fig. 9:
Feedback loop for automatic
start:
The feedback loop monitors
contactors or the expansion
modules.
Power supply
and
Safety contacts
Fig. 10:
Power supply A1 and A2.
(Power supply according to techn.
Data )
Fig. 11:
Connecting load to safety con-
tacts.
(Figure shows example.
Voltage „+V“ according to techn.
Data)

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aache • Germa y
Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de
3
Emergency Stop Safety Relay SR7C
M03
Ver. A
E61-141-00
Operating Instructions English translation
Errors and technical changes reserved
Maintenace
The device must be checked once per month for proper
function and for signs of tampering and bypassing of the
safety function.
Techn. Data
Corresponds to the standards EN 60204-1; EN ISO 13849-1 ; EN 62061
Operating voltage AC/DC 24 V
Rated Supply Frequency AC: 50-60 Hz
Permissible deviation + / - 10 %
Power consumption DC 24 V AC 24 V
approx. 4.5 W approx. 8.5 VA
Control voltage at S11 DC 24 V
Control current S11..S14 approx. 250 mA
Safety contacts 7 NO contacts
Auxiliary contacts 4 NC contacts
Auxiliary transistor outputs (O1, O2) DC 24 V / 30 mA, over current protected
Max. switching voltage AC 250 V
Safety contact breaking capacity AC: 250 V, 2000 VA, 8 A for ohmic load (6 switching cycles/ min)
(13-14, 23-24, 33-34,43-44, 53-54, 63-64, 73-74) 250 V, 3 A for AC-15
DC: 40 V, 320 W, 8 A for ohmic load
(6 switching cycles/ min)
24 V, 3 A for DC-13
Max. total current through all 7 contact up to Ta=40 °C:
35 A 10 mm spacing between the devices
20 A no spacing between the devices
Auxiliary contacts braking capacity AC: 250 V, 2000 VA, 8 A for ohmic load
(81-82, 91-92, 101-102,101-112) DC: 40 V, 320 W, 8 A for ohmic load
Minimum contact load 5 V, 10 mA
Min. Contact fuses 10 A gG
Max. line cross section 0.14 - 2.5 mm2
Tightening moment (Min. / Max.) 0.5 Nm / 0.6 Nm
Typ. switch-on delay / switch-off delay for NO contacts < 30 ms / < 20 ms
requested via safety circuit
Max. length of control line 2x 1000 m at 1.5 mm2, 2x 500 m at 0.75 mm2
Contact material AgSnO2
Contact service life mech. approx. 1 x 107
Test voltage 2.5 kV (control voltage / contacts)
Rated impulse withstand voltage, leakage path/air gap 4 kV (DIN VDE 0110-1)
Rated insulation voltage 250 V
Degree of protection IP20
Temperature range -15 °C bis +40 °C
Max. altitude ≤2000 m (above sea level)
Degree of contamination 2 (DIN VDE 0110-1)
Overvoltage category 3 (DIN VDE 0110-1)
Weight approx. 350 g
Mounting DIN rail according to EN 60715 TH35
Note:
Additional data can be requested from the manufacturer for
applications that deviate from these conditions.
Safety
Characteristics
According to
EN ISO 13849-1
The device is certified according to EN ISO 13849-1 up to a
Performance Level of PL e.
Device cannot be switched on again after an emergency
stop:
• Check whether the emergency stop circuit was closed
again.
• Was the start button opened before closing of the emer-
gency stop circuit (with manual start)?
• Is the feedback loop closed?
If the fault still exists, perform the steps listed under
“Commissioning Procedure”.
If these steps do not remedy the fault either, return the
device to the manufacturer for examination.
Opening the device is impermissible and will void the
warranty.
Device does not switch on:
• Check the wiring by comparing it to the wiring diagrams.
• Check the safety switch used for correct function and
adjustment.
• Check whether the emergency stop circuit is closed.
• Check whether the start button (with manual start) is
closed.
• Check the operating voltage at A1 and A2.
• Is the feedback loop closed?
What to Do in
Case of a Fault?
The device is otherwise maintenance free, provided that it
was installed properly.
Safety characteristics according to EN ISO 13849-1 for all variants of SR7C
Load (DC-13; 24 V) <= 0,1 A <= 1 A <= 2 A
T10d [years] 20 20 20
Category 4 4 4
PL e e e
PFHd [1/h] 2,47E-08 2,47E-08 2,47E-08
nop [cycle / year] <= 500.000 <= 350.000 <= 100.000

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aache • Germa y
Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de
4
Emergency Stop Safety Relay SR7C
M03
Ver. A
E61-141-00
Operating Instructions English translation
Errors and technical changes reserved
Dimension
Drawing
Variants
Order No. 472242 SR7C, 24 V AC/DC (50-60 Hz), fixed screw terminals
Order No. 474242 SR7C, 24 V AC/DC (50-60 Hz), incl. plug-in screw terminals
Order No. 475242 SR7C, 24 V AC/DC (50-60 Hz), incl. push-in twin spring connector
Order No. 472592 EKLS4, set of plug-in screw terminals
Order No. 472595 EKLT4, set of push-in twin spring connector
Order No. 472596 Spacer for a defined minimum distance between two safety relays (see derating)
Fixed
Terminals
Plug-In
Terminals