Zander Aachen SR4C 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
Time-Del. Emergency Stop Safety Relay SR4C
M11
Ver. A
E61-140-00
Operating Instructions English translation
Errors and technical changes reserved
• Cyclical monitoring of the output contacts
• Indication of the switching state via LED
• 2 start behaviors possible:
- monitored manual start
- automatic start
• Short circuit and earth fault monitoring
• Up to L e, SILCL 3, category 4
SR4C is an emergency stop safety relay com ination that
com ines non-time-delayed and time-delayed contacts in a very
compact housing. This permits dangerous components of a
system to e switched off quickly and safely in an emergency
situation. At the same time, other circuits can continue to e
supplied with voltage for up to 30 seconds to allow a tool to e
moved to its idle position or to rake following parts, for
example.
• 4 positively driven safety relays contacts. ossible 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.
t is ensured that a single fault or malfunction does not lead
Installation As per D N EN 60204-1, the device is intended for installa-
tion in control cabinets with a minimum degree of protection
of P54. t is mounted on a 35 mm D N rail according to D N
EN 60715 TH35.
Safety
recautions
Fig. 2 Installation/removal
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.
Electrical
Connection
• Consider the information in the section "Techn. data"
• 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
• f 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)
Fig. 3 Connections nd non-time delayed; d time-delayed
Fig. 1 Block diagram: SR4C (1nd/3d); SR4C (2nd/2d); SR4C (3nd/1d)
A1: ower supply
A2 : ower supply
S11: DC 24 V control voltage
S10: Control line
S12: Control line
S13: Control line
S14: Control line
S21: Start control line
13-14: Safety contact 1 (nd)
23-24/27-28: Safety contact 2 (d / nd)
33-34/37-38: Safety contact 3 (d / nd)
47-48: Safety contact 4 (d)
• 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. f the version has changed, the overall concept of
the control system in which the device is incorporated
must be validated again by the user.
• nstallation 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.
• t is not allowed to open the device, tamper with the
device or bypass the safety devices.
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
Time-Del. Emergency Stop Safety Relay SR4C
M11
Ver. A
E61-140-00
Operating Instructions English translation
Errors and technical changes reserved
Depending on the application or the result of the risk assessment according to EN SO 13849-1, the device must be wired as
shown in Fig. 1 to Fig. 11. Non-time delayed contacts can be used up to category 4, PL e, time-delayed safety contacts up to
category 3, PL e.
Applications
Fig. 3:
Single-channel emergency stop
circuit with earth fault monitoring.
(up to category 1, L c)
Fig. 2:
Two-channel emergency stop
circuit with earth fault monitoring.
(up to category 3, L d)
Fig. 1:
Two-channel emergency stop
circuit with short circuit and earth
fault monitoring.
(up to category 4, L e)
Fig. 4:
Two-channel sliding guard monito-
ring with short circuit and earth
fault monitoring.
(up to category 4, L e)
Emergency Stop
Circuit
Fig. 7:
Automatic start (e.g. for application with
a safety door).
Max perm. delay during closing of the
safety switches on S12 and S13:
S12 before S13: 300 ms;
S13 before S12: any
Warning:
Safety contacts switch
when the power supply is
connected.
Fig. 8:
Feedback loop for monitored
manual start:
The feedback loop monitors
contactors or the expansion
modules.
Starting Behavior
Feed ack Loop
Note: The items listed under “Electrical connection” must be observed during commissioning.
Commissioning
rocedure
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:
f “Automatic start” is set, bear in mind that the safety
contacts will switch immediately after the power supply is
connected. f “Monitored manual start” is set, the start
button must be opened after wiring.
3. Wiring feedback loop:
f 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. et time delay:
Set the desired time delay on the rotary knob (not for fixed
delay time)
Warning:
Scale divisions should be regarding only as a setting aid.
Always make shure to measure the delay time.
6. tarting the device:
Switch on the operating voltage.
Warning:
f the “Automatic start” starting behavior is set, the safety
contacts will close immediately.
f the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
LEDs K1, K2, K3 and K4 are lit.
7. Triggering safety function:
Open the emergency stop circuit by actuating the connected
safety switch. The safety contacts open immediately.
Warning: Measure the delay time.
8. Reactivation:
Close the emergency stop circuit. f “Automatic start” is
selected, the safety contacts will close immediately.
f the “Monitored manual start” starting behavior is set, close
the start button to close the safety contacts.
Note:
• n order to activate earth fault monitoring, the PE must be
connected only to the power supply unit in accordance
with EN 60204-1
• For proper operation, all safety contacts must have re-
turned to idle state before restarting the device
• 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.
(up to category 4, L e)
Fig. 9:
Feedback loop for automatic start:
The feedback loop monitors
contactors or the expansion mo-
dules .
Power supply
and
Safety contacts
Fig. 10:
ower supply A1 and A2.
( ower supply according to techn.
data )
Fig. 11:
Connecting load to safety contacts.
(Figure shows example.
Voltage „+V“ according to techn.
Data)
Fig. 6:
Manual start.

H. ZANDER GmbH & Co. KG • Am Gut Wolf 15 • 52070 Aache • Germa y
Tel [phone] • Fax [phone] • [e-mail] • www.zander-aachen.de 3
Time-Del. Emergency Stop Safety Relay SR4C
M11
Ver. A
E61-140-00
Operating Instructions English translation
Errors and technical changes reserved
Maintenance
emergency stop:
• Check whether the emergency stop circuit was closed
again.
• Was the start button opened before closing of the
emergency stop circuit (with manual start)?
• Is the feedback loop closed?
f the fault still exists, perform the steps listed under
“Commissioning Procedure”.
f 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.
What to Do in
Case of a Fault?
The device must be checked once per month for proper
function and for signs of tampering and bypassing of the
safety function (to do this, check the wiring of the device
and activate the emergency stop function. Check the delay
time.The device is otherwise maintenance free, provided
that it was installed properly.
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 SO 13849-1 up to a
Performance Level of PL e.
Techn. Data Corresponds to the standards EN 60204-1, EN SO 13849-1, EN 62061
Operating voltage AC/DC 24 V
Rated supply frequency 50 - 60 Hz
Permissible deviation +/- 10 %
Power consumption DC 24 V AC 24 V
approx. 4.7 W approx. 5.3 VA
Control voltage at S11 DC 24 V
Control current approx. 190 mA
Response delay after actuation of the buttons < 20 ms
Safety contacts 4 NO contacts (3n/1d, 2n/2d, 1n/3d)
Max. switching voltage AC 250 V
Safety contact breaking capacity AC: 250 V, 2000 VA, 8 A for ohmic load (6 switching cycles/ min)
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. cumulative current on the safety contacts 15 A *)
Time delay 1 ... 30 s, continuously adjustable
Minimum contact load 5 V, 10 mA
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 / < 30 ms
requested via safety circuit
Max. length of control line 1000 m at 0.75 mm2
Contact material AgSnO2
Contact service life mech. approx. 1 x107
Test voltage 2.5 kV (control voltage/contacts)
Rated impulse withstand voltage, leakage path/air gap; 4 kV
Rated insulation voltage 250 V
Degree of protection P20
Degree of contamination / Overvoltage category 2 / |||
Temperature range -15 °C ... +40 °C
Max. altitude ≤ 2000 m (above sea level)
Weight approx. 250g
Mounting D N rail according to EN 60715 TH35
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?
Device cannot be switched on again after an
*) If several SR4C devices are closely spaced under load, the max. total current at the ambient temperature of T 20 °C: 9 A; at T 30 °C: 3 A; at T 40 °C 1 A.
If these currents are exceeded, a spacing of 5 mm between the devices must be observed.
Safety characteristics according to EN ISO 13849-1 for all variants of SR4C
Load (DC-13; 24 V) <= 0,1 A <= 1 A <= 2 A
T10d [years] 20 20 20
Category
Time-delay
Non-time-delay
3
4
3
4
3
4
PL eee
PFHd [1/h]
Time-delay
Non-time-delay
8,84E-08
4,22E-08
8,84E-08
4,22E-08
8,84E-08
4,22E-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
Time-Del. Emergency Stop Safety Relay SR4C
M11
Ver. A
E61-140-00
Operating Instructions English translation
Errors and technical changes reserved
Dimension
Drawing
Variants Order No. 472212 SR4C, AC/DC 24 V, 3 non-time del./ 1 time-del. contact 1-30 s fixed screw terminals
Order No. 472222 SR4C, AC/DC 24 V, 2 non-time del./ 2 time-del. contacts 1-30 s fixed screw terminals
Order No. 472232 SR4C, AC/DC 24 V, 1 non-time del./ 3 time-del. contacts 1-30 s fixed screw terminals
Order No. 472213 SR4C, AC/DC 24 V, 3 non-time del./ 1 time-del. contact 2 s fixed screw terminals
Order No. 472223 SR4C, AC/DC 24 V, 2 non-time del./ 2 time-del. contacts 2 s fixed screw terminals
Order No. 472233 SR4C, AC/DC 24 V, 1 non-time del./ 3 time-del. contacts 2 s fixed screw terminals
Order No. 474212 SR4C, AC/DC 24 V, 3 non-time del./ 1 time-del. contact 1-30 s incl. plug-in screw terminals
Order No. 474222 SR4C, AC/DC 24 V, 2 non-time del./ 2 time-del. contacts 1-30 s incl. plug-in screw terminals
Order No. 474232 SR4C, AC/DC 24 V, 1 non-time del./ 3 time-del. contacts 1-30 s incl. plug-in screw terminals
Order No. 475212 SR4C, AC/DC 24 V, 3 non-time del./ 1 time-del. contact 1-30 s incl. push-in twin spring connector
Order No. 475222 SR4C, AC/DC 24 V, 2 non-time del./ 2 time-del. contacts 1-30 s incl. push-in twin spring connector
Order No. 475232 SR4C, AC/DC 24 V, 1 non-time del./ 3 time-del. contacts 1-30 s 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-n
Terminals