Pizzato CS AR-91 Data Sheet

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: RUC-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

K1

K2

A1

S11

S12

S33

S34

13

23A2S21

S35

S22

14

24

Y43

Y44

LED
CH1

LED
CH2

A11323

A21424

S11

S12

Y43

Y44

S33

S21

S22

S35

S34

PWR

CH1

CH2

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