Idem SCR-7 Operation manual
User Information
Safety Relays from IDEM SCR-7
H04
Ver. A
E61-329-00
•
2 start behavior possible:
- Monitored manual start
- Automatic start
•
Up to PL e, SILCL 3, category 4
•
STOP-category: 0
•
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.
Correct Use The SCR-7 is a universal emergency stop safety switching evice
with seven safe relay outputs that can quickly an safely stop the
moving parts of a machine or system in case of anger.
Applications for the SCR-7 inclu e single or ual-channel
emergency stop circuits an guar monitoring on machines an
systems. This safety relay can be elivere with fixe screw
terminals or plug-in terminals.
Features
•
7 safe, redundant relay outputs
•
4 auxiliary relay outputs; 2 auxiliary transistor 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
Function
The emergency stop safety switching device SCR-7 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
•
A safety 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 (10 A gG) must be
provided.
•
A maximum length of the control lines of 1000 meters
with a line cross section of 0.75 mm2must not be ex-
ceeded.
•
The line cross section must not exceed 2.5 mm2.
•
If the device does not function after commissioning, it
must be returned to the manufacturer unopened. Ope-
ning the device will void the warranty.
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
•
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.
Fig. 1 Block diagramm SCR-7
Fig. 2 nstallation / removal
Fig. 3 Connections
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
User Information
Safety Relays from IDEM SCR-7
H04
Ver. A
E61-329-00
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
contacts 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 connec-
ted 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
emergency 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 de-
vice must be wired as shown in Fig. 1 to Fig. 11.
Applications
Fig. 3:
Single-channel emergency stop
circuit with earth fault monitor-
ing.
(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
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 contac-
tors 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 contacts.
(Figure shows example.
Voltage „+V“ according to techn.
Data)
Warning:
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.
User Information
Safety Relays from IDEM SCR-7
H04
Ver. A
E61-329-00
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 24V
Rated Supply Frequency AC: 50-60Hz
Permissible deviation + / - 10%
Power consumption DC 24V AC 24V
approx. 4.5W approx. 8.5VA
Control voltage at S11 DC 24V
Control current S11..S14 approx. 250mA
Safety contacts 7 NO contacts
Auxiliary contacts 4 NC contacts
Auxiliary transistor outputs (O1, O2) DC 24V / 30mA, over current protected
Max. switching voltage AC 250V
Safety contact breaking capacity AC: 250V, 2000VA, 8A for ohmic load
(6 switching cycles/ min)
(13-14, 23-24, 33-34,43-44, 53-54, 63-64, 73-74) 250V, 3A for AC-15
DC: 40V, 320W, 8A for ohmic load
(6 switching cycles/ min)
24V, 3A for DC-13
Max. total current through all 7 contact up to Ta=40°C:
35A 10mm spacing between the devices
20A no spacing between the devices
Auxiliary contacts braking capacity AC: 250V, 2000VA, 8A for ohmic load
(81-82, 91-92, 101-102,101-112) DC: 40V, 320W, 8A for ohmic load
Minimum contact load 24V, 20mA
Contact fuses 10A gG
Line cross section 0.14 - 2.5mm2
Max. length of control line 1000m at 0.75 mm2
Contact material AgSnO2
Contact service life mech. approx. 1 x 107, electr. 1 x 105operating cycles
Test voltage 2.5kV (control voltage / contacts)
Rated impulse withstand voltage, leakage path/air gap 4kV (DIN VDE 0110-1)
Rated insulation voltage 250V
Degree of protection IP20
Temperature range -15°C bis +40°C
Degree of contamination 2 (DIN VDE 0110-1)
Overvoltage category 3 (DIN VDE 0110-1)
Weight approx. 350g
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 pro-
perly.
Safety characteristics according to EN ISO 13849-1 for all variants of SCR-7
Load (DC-13; 24V) <= 0,1A <= 1A <= 2A
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
User Information
Safety Relays from IDEM SCR-7
H04
Ver. A
E61-329-00
Dimension
Drawing
9945
114
Variants
SCR-7 AC/DC 24V (50-60Hz), fixed screw terminals
SCR-7 (pluggable) AC/DC 24V (50-60Hz), plug-in terminals
IDEM SAFETY SWITCHES Ltd, 2 Ormside Close, Hindley Industrial Estate ,Hindley Green, Wi an, WN2 4HR UK, Tel: +44 (0)1942 261000 Fax.: +44 (0)1942 676293
IDEM ( U.S.A.) - 3909 Washin ton Blvd. 204, Fremont, CA 94538 email: [email protected] web: www.idemsafety.com
Feb 16
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