
10A
Safety module CS AR-91
Technical data
Housing
Polyamide housing PA 66, self-extinguishing V0 acc. to UL 94
Protection degree: IP40 (housing), IP20 (terminal strip)
Dimensions: see page 295, design A
General data
SIL CL: up to SIL CL 3 acc. to EN 62061
Performance Level (PL): up to PL e acc. to EN ISO 13849-1
Safety category: up to cat. 4 acc. to EN ISO 13849-1
Safety parameters: see page 349
Ambient temperature: -25°C…+55°C
Mechanical endurance: >10 million operating cycles
Electrical endurance: >100,000 operating cycles
Pollution degree: external 3, internal 2
Impulse withstand voltage (U
Rated insulation voltage (U
Overvoltage category: II
Weight: 0.2 kg
): 4 kV
imp
): 250 V
i
Module for emergency stops, end
position monitoring for movable guards
and magnetic safety sensors
Main features
•For safety applications up to SIL 3/PL e
•Choice between automatic start, manual start
or monitored start
•Connection of input channels of opposite
potentials
•Reduced housing width of 22.5 mm
•Output contacts:
2 NO safety contacts, 1 NO opto-decoupled
auxiliary contact
•Supply voltage: 24 Vac/dc
•Insensitive to voltage dips
Utilization categories
Alternating current: AC15 (50…60 Hz)
Ue (V) 230
Ie (A) 3
Direct current: DC13 (6 oper. cycles/min.)
Ue (V) 24
Ie (A) 4
Quality marks and certificates:
IMQ certificate of conformity no. 340
(EN 81‑20:2014; EN 81‑50:2014; EN 81‑1:1998+A3:2009;
EN 81‑2:1998+A3:2009)
EC type examination certificate: IMQ CP 432 DM
(Machinery Directive)
EC type examination certificate: IMQ 236
(Machinery Directive)
CCC approval: 2013010305640211
EAC approval: RUC-IT.AД35.В.00454
Compliance with the requirements of:
Low Voltage Directive 2014/35/EU,
Machinery Directive 2006/42/EC,
EMC Directive 2014/30/EU
Supply
Rated supply voltage (U
Max. DC residual ripple in DC: 10%
): 24 Vac/dc; ±15%; 50…60 Hz
n
Power consumption AC: < 5 VA
Power consumption DC: < 2.5 W
Control circuit
Protection against short circuits: PTC resistance, Ih=0.5 A
PTC response time: Response time > 100 ms, release time > 3 s
Maximum resistance per input:
50
Current per input: < 40 mA
Min. duration of start impulse t
Response time t
Release time t
Release time in absence of power supply t
Simultaneity time t
Response time starting from application of the supply: < 300 ms
: < 120 ms
A
: < 15 ms
R1
: unlimited
C
: > 50 ms
MIN
: < 65 ms
R
Auxiliary signalling circuit
Auxiliary output (Y43-Y44): 1NO opto-decoupled
Rated operating voltage (U
Rated operating current (I
Rated impulse withstand voltage (U
Release time t
: < 1 ms
R2
): 24 Vdc
e
): 25 mA
e
): 4 kV
imp
In compliance with standards:
EN 60204-1, EN ISO 13855, EN 1037, EN ISO 12100, EN ISO 13850, EN 60529,
EN 61000-6-2, EN 61000-6-3, EN 61326-1, EN 60664-1, EN 60947-1, EN ISO 13849-1,
EN ISO 13849-2, EN 62061, UL 508, CSA C22.2 n° 14-95
Output circuit
Output contacts: 2 NO safety contacts,
Contact type: forcibly guided
Material of the contacts: gold-plated silver alloy
Maximum switching voltage: 230/240 Vac; 300 Vdc
Max. current per contact: 6 A
Conventional free air thermal current (Ith): 6 A
Max. total current Σ Ith
2
: 36 A
2
Minimum current: 10 mA
Contact resistance:
100 m
External protection fuse: 4 A type F
The number and the load capacity of output contacts can be increased by using expansion modules or
contactors. See page 241-250.
Code structure
CS AR-91V024
Connection type
V
Screw terminals
M Connector with screw terminals
X Connector with spring terminals
215
Supply voltage
024
24 Vac/dc
Features approved by UL
Rated supply voltage (Un): 24 Vac/dc; 50…60 Hz
Power consumption AC: < 5 VA
Power consumption DC: < 2.5 W
Maximum switching voltage: 230 Vac
Max. current per contact: 6 A
Utilization category C300
Notes:
- Use 60 or 75 °C copper (Cu) conductors, rigid or flexible, wire size 30-12 AWG.
- Tightening torque for terminal screws of 5-7 lb in.
- Only for 24 Vac/dc versions: power supply only with class 2 sources or with
limited voltage and energy. (Supply from Remote Class 2 Source or limited
voltage limited energy).
General Catalogue Safety 2017-2018

Safety module CS AR-91
ITALY
Internal block diagram
LED
PWR
LOGIC
Voltage dips, short interruptions and
voltage variations
The CS AR-91 safety module has a built-in
voltage drop sensor which serves to
protect and safeguard the internal state
of the safety relays, in the event of dips
or short voltage interruptions. This is to
prevent unwanted switching states in
relation to the state of the inputs from
occurring. When voltage is restored,
the device continues to operate with a
switching state that is consistent with the
input signals. The safety module retains
its normal function during voltage dips
and brief interruptions; for longer voltage
interruptions, the safety outputs open and
reset themselves automatically during an
automatic start if voltage is restored or –
in the case of a manual or monitored start
– require that the system be reset by the
operator.
LOGIC
Function diagramsPin assignment
Configuration with automatic start
t
t
R
R
2
tCt
A
Configuration with monitored start
Configuration with manual start
t
A
Legend:
t
: Min. duration of start impulse
MIN
tC: simultaneity time
tA: response time
2
tCt
A
t
t
R1
R1
t
t
R
R
2
2
t
A
t
t
t
t
t
t
R2
R2
t
R1
R1
A
R1
R1
t
A
t
t
R
R
2
2
t
A
t
t
R1
R1
t
t
R
R
2
2
t
MINtA
t
t
R1
R1
t
t
R2
R2
t
t
t
MIN
R1
R1
t
: release time
R1
: release time in absence of
t
R
t
t
R
t
R
power supply
R
10A
A1/A2
S11/S12
S21/S22
13/14, 23/24
Y43/Y44
A1/A2
S11/S12
S21/S22
S33/S34 (START)
13/14, 23/24
Y43/Y44
A1/A2
S11/S12
S21/S22
S33/S34 (START)
13/14, 23/24
Y43/Y44
Input configuration
The diagram does not show the exact position of the terminals in the product
Automatic start
With regard to the indicated diagrams, bridge the
start button between S33
and S34 in order to activate the automatic start
module.
S34 S34
Notes:
The configurations with one channel are obtained taking into consideration the S11/
S12 input only. In this case it is necessary to consider time tR1 referred to input
S11/S12, time tR referred to the supply, time tA referred to input S11/S12 and to the
start, and time t
Input configuration with magnetic sensors
2 channels
L / +
A1
CS AR-91
S21 S22
S12
S11
S35
S33
S34
A2
N / -
Monitored start
With regard to the indicated diagrams, remove the
S21
connection between S22
and S35 in order to activate the monitored start
module.
S35
S22
S21
S22
MIN
S35
referred to the start.
Monitoring of movable guards and magnetic
safety sensors
The safety module can
monitor emergency stop
circuits, control circuits for
movable guards as well as
magnetic safety sensors.
Replace the emergency
stop contacts with switch
contacts or sensor contacts.
The sensors can only be
used in 2-channel configuration.
General Catalogue Safety 2017-2018
Application examples See page 251
216