Safety relays - ZK series ZK31x45

Industrial design
Width 45mm
Single or dual channel activation
3 N/O safety contacts and 1 N/C control contact
Reset switch monitoring
Stop-category 0 (according to EN 60204-1)
Safety-category 4 (according to EN 954-1)

Technical data

1. Functions 6. Control circuit

Basic unit for emergency stop, safety gates and safety mat (only for supplying the control inputs)
applications Control contact Y11-Y21:
Line resistance: ≤70Ω
2. Indicators Galvanically separated A1-A2 to Y11-Y21-PE:
Green LED (SUPPLY) ON: indication of supply voltage Yes (AC units)
Green LED (K2) ON/OFF: indication of relay output No (DC units)
Green LED (K3) ON/OFF: indication of relay output Rated output voltage: 24V DC
No-load voltage: ≤40V DC
3. Mechanical design Rated current: 40mA
Self-extinguishing plastic housing, IP rating IP40 Short circuit current IK: 1000mA
Mounted on DIN-Rail TS 35 according to EN 50022 Fusing: PTC-resistor (DC) resp.
Mounting position: any short-circuit proof transformer (AC)
Shockproof terminal connection according to VBG 4 Response time PTC: 3s
(PZ1 required), IP rating IP20 Recovery time PTC: 2s
Initial torque: 0.8 to 1.0Nm
Terminal capacity: Control contact Y12, Y13, Y14, Y31:
2 x 2.5mm2 without multicore cable end Rated current: Y13, Y14 40mA
2 x 1.5mm2 with/without multicore cable end Y12, Y31 15mA
Response time tA1 K2, K3 80ms (with
4. Input circuit RESET-monitoring)
Supply voltage: Response time tA2 K2, K3 500ms (without
24V DC terminal A1-A2 (ZK31x45 24VDC) RESET-monitoring)
115V AC terminal A1-A2 (ZK31x45 115VAC) Release time tR K2, K3 50ms (E-stop)
230V AC terminal A1-A2 (ZK31x45 230VAC) Release time tR1 100ms (interruption of
Tolerance: -15% to +10% supply voltage)
Rated frequency: 50 to 60Hz Simultaneity time tS: ≤500ms
Rated consumption: Switch-on time tM: K1 min. 50ms
24V DC 1.0W (ZK31x45 24VDC) Standby time tB: ≥100ms (AC units only)
115V AC 3.2VA(2.5W) (ZK31x45 115VAC) Reset time tW: 500ms (without RESET-monitoring)
230V AC 3.2VA(2.5W) (ZK31x45 230VAC)
Duration of operation: 100% 7. Ambient conditions
Residual ripple for DC: 2.4VSS Ambient temperature: -25 to +55°C (according to IEC 68-1)
Storage temperature: -25 to +70°C
5. Output circuit Transport temperature: -25 to +70°C
3 normally open forced safety contacts and Relative humidity: 83% (at 23°C), 93% (at 40°C)
1 normally closed forced control contact according to DIN 50016
Switching capacity: 1380VA (6A/230V AC/DC) Pollution degree: 3 outside, 2 inside
Rated current: max. 6A (according to IEC 664-1)
Total current all contacts: max. 18A
Fusing: 6A fast acting
Mechanical life: 10 x 106 operations
Switching frequency:
3600/h at Ie 6A / Ue 230V AC (AC-15)
3600/h at Ie 3A / Ue 24V DC resp.
360/h at Ie 6A / Ue 24V DC (DC-13)
Subject to alterations and errors

Rated voltage: 300V AC (according to IEC 664-1)

Surge voltage: 4kV, overvoltage category III
(according to IEC 664-1)

Release 02/02
5.02– 2
TSC
ZK31x45

Dimensions

Functions
E-stop application including reset monitoring
Basic unit for emergency stop, safety gates and A1/A2 supply voltage, LED SUPPLY
safety mat applications
Y12, Y31 E-stop

After the supply voltage is applied to terminals A1/A2, and if the Y13 Reset (with reset switch monitoring)
E-stop momentary contact switch is not activated the relay K1 is en- K2, K3 13/14, 23/24, 33/34, LED K2, LED K3
ergised with the RESET switch. The control logic of relay K1 triggers 41/42
the relays K2 and K3. The latter become self locking through their tA1 response time (reset monitoring)
own contacts. At the same time the relay contacts of K2 and K3 tR release time at E-stop(Y12, Y31)
tR1 release time at supply voltage breakdown
de-energise K1 which releases. tM minimum activation time
After this switch on period, the three enabling current paths (termi- 1 E-stop via Y12, Y31
nals 13/14, 23/24, 33/34), which are intended for the output, are 2 supply voltage breakdown (A1/A2)
closed and one control contact is opened (terminals 41/42). Three
LEDs provide a display, and these LEDs are associated with the safety E-stop application without reset monitoring
channels K2, K3 and the supply voltage. A1/A2 supply voltage, LED SUPPLY
If the E-stop switch is activated, the current leads for the K2 and K3 Y12, Y31 E-stop
relays are interrupted. The enabling current paths are interrupted Y14 Reset (without reset switch monitoring)
and the control contact is closed. With two-channel wiring of the
K2, K3, 13/14, 23/24, 33/34, LED K2, LED K3
E-stop circuit, it is possible to monitor the presence of a short
41/42
circuit in the cables connected (cross monitoring) and ground faults. tA2 response time (without reset switch monitoring)
An internal electronic circuit protects the emergency stop relay tR release time at E-stop (Y12, Y31)
from damages. After eliminating the fault the item will return into tR1 release time at supply voltage breakdown
operation within 2s. tM minimum activation time
tW reset time
1 E-stop via Y12, Y31
Reset switch monitoring 2 supply voltage breakdown (A1/A2)
The emergency stop safety relay can be operated with or without
reset switch monitoring. In case of connection with reset switch Protective door application
monitoring (terminal Y13) the activation of the item occurs only A1/A2 supply voltage, LED SUPPLY
with the falling edge of the RESET key. This means that only a static Y12 protective door contact channel 1
operation of the item is possible with this function. To start the item Y22 protective door contact channel 2
the RESET key has to be closed and than released. In this case an
Y14 reset
automatic start of the item by using a jumper for the RESET key
cannot be performed. K2, K3, 13/14, 23/24, 33/34, LED K2, LED K3
Operation without monitoring the RESET switch (device connection 41/42
tA2 response time
Y14) is suitable for dynamic operation (automatic start). The RESET
tB stand-by time >100ms (Ac units only)
switch can be shunted. This application can be used for protective tR release time
screens. tS simultaneity time
tW reset time

Connections

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