Safety relay
➜ Extension relay
■ Extending the number of contacts in a safety relay
■ Used to increase the breaking capacity of the main unit
■ "CE" conforming product / BG approved
■ Safety via redundancy and self-checking
■ 3 "N/O" safety contacts with linked contacts
6 A / 250 V AC
■ 1 "N/C" return loop
Specifications
Type Supply voltage Connections Weight (g) Code
KZE3-XS 24 V AC DC Screw terminals 310 85 100 936
KZEC3-XS 24 V Spring terminals 310
General characteristics
Supply
Operating range - 15 % / + 10 % of Un for AC
Precision
Synchronisation difference < 25 ms
Maximum response time on emergency stop at Un 50 ms
Output specification
Number of data circuits
Return loop
Function and use
Max. absorbed power AC 1.6 VA / DC 2 W
Dielectric strength 2.95 kV according to CEI 664-1
Resistance to tracking Material group III
EMC immunity according to EN 50082-2
Radiated electromagnetic field 10 V/m Level 3 acc. to IEC 1000.4.2
Electrostatic discharge 8 kV in the air acc. to IEC 1000.4.2
Shock waves Common mode 1 kV acc. to IEC 1000.4.5
Radio frequencies in common mode 10 Vrms Level 3 acc. to IEC 1000.4.6
40 / 260 V AC Screw terminals 310 85 100 937
85 101 936
40 - 260 V Spring terminals 310 85 101 937
- 15 % / + 15 % of Un for DC
3"NO" AgSnO2 contact
1 "NC" AgSnO2 contact
80 MHz to 1GHz / 900 MHz (ENV 50140/204)
150 kHz to 80 MHz (ENV 50141) acc. to IEC 1000.4.11
10
Dimensions
KZE3-XS Mounting - Removing
113
90
68,6
118
90
22,5
Principles
Control devices :
Depending on the degree of safety required, the KZE3-XS can be controlled by one or two channels. In most cases, control by one channel will be
sufficient. Please consult your inspection office for further information.
Control devices :
The KZE3-XS has three "N/O" safety contacts (13-14/23-24/33-34) and a return loop (X1-X2) which must be included in the "start / validation" line (Y1-Y2)
of the main unit. One or more control devices may be wired up to the breaking capacity of the safety contacts : 1500 VA.
However, to limit internal heating in the KZE3-XS, it is advisable not to exceed 10 A thermal for all three contacts.
Extending the number of contacts :
It is possible to wire several extension KZE3-XS units in cascade. All the return loops (X1-X2) will be in series with the "start/validation" line (Y1-Y2) of the
main unit.
Connections
13 23 33
A1 X1 X 2
PWR
OUT
13 23 33 41
14 24 41 42
KZE3-XS
A2 X1 X2
2414 34
A1-A2 Power supply-Control device (s)
41-42 Return contact
13-14/23-24/33-34 "N/O" safety contacts
X1-X2 Internal return loop
Applications
Example of wiring
KZE3-XS controlled by a single
channel as an extension of a KNA3-XS
24 V
1
33
2313
2
c1
c2
A1 Y1 Y2
13 23 33
14 24 34
A2 42
41
14 24 34
13
33
23
A1 X1 X2
KZE3-XSKNA3-XS
13 23
33
14 24 34
A2 42
41
14 24 34
Two KZE3-XS as extensions of a KNA3-XS
24 V
1
3
2
c1
c2
2313
A1 Y1 Y2
13 23 33
14 24 34
A2 42
41
14 24 34
13
33
23
A1 X1 X2
KZE3-XSKNA3-XS
13 23
14 24 34
A2 42
41
14 24 34
13
33
33
33
23
A1 X1 X2
KZE3-XS
13 23
33
14 24 34
A2 42
41
14 24 34
C2C1
0V
Emergency stop
B
Start
C
X1-X2 of the KZE3-XS bridged
D
KNA3-RS with KZE3-XS extension unit
+ 24 V
1
Y11
Y12
A1
2
Start
B
Emergency stop
C
0V
13 23 33
KNA3-RS
A2 Y21 Y22
X1
Y2 51 52 41
14 24 34
Y1X2 14 24 34
C4
C2
C1
0V
C4C3
C6
C5
Emergency stop
B
Start
C
13
3313
23
41
23
A1 X1 X2
KZE3-XS
13 23
33
33
c1
c2
C3
C5
C8
C7
C6
C9
10
c3
42
42
C1
C2
14 24 34
A2 42
41
14 24 34
C4C3
C5
c4
c5
Safety relay: general characteristics
➜ Emergency stop
➜ Timed contacts
➜ Extension relay
➜ Zero speed monitoring
➜ 2-hand control
Supply
Supply voltage 24 V AC 50 / 60 Hz
On/off indication 1 power supply voltage LED
Output specification
Type Volt-free outputs
Breaking capacity (V resistive) 1500 VA
Max. breaking current 6.82 A
Max. breaking voltage 440 V AC
Electrical endurance
Mechanical life (operations)
Function and use
On/off indication 1 internal relay status LED
Operating temperature (°C) IEC 68-2-14 0 ➞ +50
Storage temperature (IEC 68-2-12) (ºC) -20 ➞ +70
Internal voltage 24 V DC
EMC immunity according to EN 50082-2
fast transients 2kV directly acc. to IEC 1000.4.4
Drop-out / short breaks / microbreaks Un-30 % for 10 ms every 1 s
Material Polycarbonate
Protection Housing IP 40
Protection Terminal IP 20
Tightening capacity
Spring terminals, 2 terminals per connection point - rigid wire
Spring terminals, 2 terminals per connection point - flexible wire
24 V DC maximum ripple 10 %
5
operations at 1500 VA resistive
10
5
5.10
operations at 500 VA resistive
7
10
4 kV directly for the 230 V <ac> version
2 Kv when coupled
Un-60 % for 100 ms every 1 s according to IEC 61496-1/97
Un-100 % for 10 ms every 100 ms
Un-50 % for 20 ms every 200 ms
Un-50 % for 500 ms every 5 s
Self-extinguishing-UL94 class VO
2 x 1.5 mm 2 multicore with ferrule
2 x 2.5 mm
2.5 mm
1.5 mm
2
solid conductor
2
2
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