3
SRB301STV.2 /CCV.2 /PCV.2
SRB301STV.3 /CCV.3 /PCV.3
Operating instructions
Safety-monitoring module
EN
Outputs
Number of safety contacts:
3
Number of auxiliary contacts:
1
Number of signalling outputs:
0
Max. switching capacity of the safety contacts:
13-14; 23-24; 33-34:
max. 250 V, 8 A ohmic (inductive in case of
suitable protective wiring); min. 10 V / 10 mA;
residual current at ambient temperature
up to 45°C: 24 A / 55°C: 18 A / 60°C: 12 A
Switching capacity of the auxiliary contacts:
41-42: 24 VDC / 2 A
Fuse rating of the
safety contacts:
external (I
k
= 1000 A) to EN 60947-5-1
Safety fuse 10 A quick blow, 8 A slow blow
Fuse rating for the a
uxiliary contacts:
external (I
k
= 1000 A) to EN 60947-5-1
Safety fuse 2.5 A quick blow, 2 A slow blow
Utilisation category to EN 60947-5-1:
AC-15: 230 VAC / 6 A
DC-13: 24 VDC / 6 A
Dimensions H x W x D:
- SRB301ST/PCV.2/V.3:
100 x 22.5 x 121 mm;
- SRB301STV.2/V.3:
120 x 22.5 x 121 mm;
- SRB301ST/CCV.2/V.3:
130 x 22.5 x 121 mm
The data specified in this manual are applicable when the
component is operated with rated operating voltage U
e
±0%.
2.5 Safety classification
Standards:
EN ISO 13849-1, IEC 61508, EN 60947-5-1
PL:
up to e
Control category:
up to 4
DC:
99% (high)
CCF:
> 65 points
PFH value:
≤ 2.00 × 10
-8
/h
SIL:
up to 3
Service life:
20 years
The PFH value of 2.00 × 10
-8
/h applies to the combinations of contact
load (current through enabling contacts) and number of switching cy-
cles (n
op/y
) mentioned in the table below. At 365 operating days per year
and a 24-hours operation, this results in the below-mentioned switching
cycle times (t
cycle
) for the relay contacts.
Diverging applications upon request.
Contact load
n
op/y
t
cycle
20 %
525,600
1.0 min
40 %
210,240
2.5 min
60 %
75,087
7.0 min
80 %
30,918
17.0 min
100 %
12,223
43.0 min
3. Mounting
3.1 General mounting instructions
Mounting: snaps onto standard DIN rails to EN 60715.
Snap the bottom of the enclosure slightly tilted forwards in the DIN rail
and push up until it latches in position.
3.2 Dimensions
All measurements in mm.
Device dimensions (H/W/D):
SRB301ST/PCV.2/V.3: 100 x 22.5 x 121 mm
SRB301STV.2/V.3:
120 x 22.5 x 121 mm
SRB301ST/CCV.2/V.3: 130 x 22.5 x 121 mm
4. Electrical connection
4.1 General information for electrical connection
As far as the electrical safety is concerned, the protection
against unintentional contact of the connected and therefore
electrically interconnected apparatus and the insulation of the
feed cables must be designed for the highest voltage, which
can occur in the device.
The electrical connection may only be carried out by autho-
rised personnel in a de-energised condition.
Wiring examples: see appendix
To avoid EMC disturbances, the physical ambient and opera-
tional conditions at the place where the product is installed,
must meet the provisions laid down in the paragraph "Electro-
magnetic Compatibility (EMC)" of DIN EN 60204-1.
5. Operating principle and settings
5.1 Operating principle after the operating voltage is switched on
The safety-monitoring module checks whether the enabling contacts
of the relay are opened. If the safety guard is closed and the exter-
nal reset button is actuated or an automatic start is programmed, the
enabling paths of the safety-monitoring module will close. The cables
and the connected safety switches are tested when the safety guards
are opened. This check expects a signal change on both inputs of the
switch when the safety guard is opened. If this change does not take
place, the release is blocked, even when the "right" signals for this situ-
ation are measured at the inputs when the safety guard is closed again.
When the safety guard is opened, the enabling paths of the safety-mon-
itoring module is opened as well.
5.2 LED functions
• K1: Status channel 1
• K2: Status channel 2
• U
B
: Status operating voltage (LED is on, when the operating
voltage on the terminals A1 - A2 is ON)
• U
i
: Status internal operating voltage (LED is on, when the
operating voltage on the terminals A1 - A2 is ON and the
fuse has not been triggered).
• QS: cross-wire short detection status (LED on when
cross-wire short detection active)
5.3 Description of the terminals
Voltages:
A1
A2
+24 VDC/24 VAC
0 VDC/24 VAC
Inputs:
S11-S12
S21-S22
S21-S22
Input channel 1 (+)
Input channel 2 (+) (without cross-wire
short detection)
Input channel 2 (–) (with cross-wire
short detection)
Outputs:
13-14
23-24
33-34
41-42
First safety enabling circuit
Second safety enabling circuit
Third safety enabling circuit
Auxiliary NC contact as signalling contact
Start:
S12-X2
S12-X3
Feedback circuit and external reset (monitored)
Feedback circuit and automatic start
