Page 55 - Wieland - Safety: Safe system solutions for automation technology

safe relay

Overview of devices | part numbers
Type Rated Voltage Synchronous time Terminals Part no. Std. pack
SNZ 1022K-A 24 V AC/DC 0.5 s Screw terminals, pluggable R1.188.3700.0 1
SNZ 1022K-A 115-230 V AC 0.5 s Screw terminals, pluggable R1.188.3710.0 1
SNZ 1022K-C 24 V AC/DC 0.5 s Push-in terminals, pluggable R1.188.3720.0 1
SNZ 1022K-C 115-230 V AC 0.5 s Push-in terminals, pluggable R1.188.3730.0 1

Technical data

Function Two-hand control relay
Function display 2 LEDs, green
Power supply circuit
Rated voltage U N A1, A2 24 V AC/DC / 115-230 V AC
Rated consumption AC/DC 24 V 0.7 W / 2.0 VA
AC 115-230 V 3 VA
Rated frequency 50 - 60 Hz
Operating voltage range U B 0.85 - 1.1 x U N
Electrical isolation supply circuit - control circuit yes (at U N = 115-230 V AC)
Control circuit
Rated output voltage T11 24 V DC relay
Input current / peak current T12 2.5 mA / 3 mA
T13 25 mA / 60 mA safe
< 20 ms
Response time t A1 / t A2
> 250 ms
Recovery time t W
Release time t R < 20 ms
≤ 500 ms
Synchronous time t S
Max. resistivity, per channel (5 + (1.176 × U B / U N – 1) × 100) Ω
Output circuit
Enabling paths 11/12/14 changeover contact
Contact type Ag-alloy, gold-plated
Rated switching voltage 230 V AC
enabling path 10/12 6 A
Max. thermal current I th
Application category (NO) AC-15 U e 230 V, I e 3 A
DC-13 U e 24 V, I e 2 A
Short-circuit protection (NO), lead fuse / circuit breaker 6 A class gG / melting integral < 100 A²s
Mechanical life 10 x 10 switching cycles
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General data
Creepage distances and clearances between the circuits EN 60664-1
Protection degree according to EN 60529 (housing / terminals) IP40 / IP20
Ambient temperature / storage temperature -25 ºC - +55 ºC / -25 ºC - + 75 ºC
Wire ranges screw terminals, fine-stranded / solid 1 x 0.2 mm² – 2.5 mm² / 2 x 0.2 mm² – 1.0 mm²
fine-stranded with ferrules 1 x 0.25 mm² – 2.5 mm² / 2 x 0.25 mm² – 1.0 mm²
Permissible torque 0.5 - 0.6 Nm
Wire ranges push-in terminals 2 x 0.25 mm² – 1.5 mm²
Weight 24 V AC/DC device / AC device 0.1 kg
Standards EN ISO 13849-1, EN 62061, EN 574
Approvals TÜV, cULus, CCC

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