6
3 Items supplied
• 1 safety relay G1502S
• 1 copy of the operating instructions safety relay, reference 80282662
If one of the above-mentioned components is missing or damaged, please contact
one of the ifm branch offices�
4 Functions and features
The safety relay is a redundant system and suited for use as:
• Safety relay for fail-safe sensors/switches with 2 PNP outputs
(e.g. GM701S, → chapter 8.1).
• Safety relay for clocked fail-safe sensors
(e.g. GM504S, → chapter 8.2).
• Relay for two-hand control to EN 574, type IIIC, with electronic sensors/
switches (→ chapter 8.3).
• Relay for two-hand control to EN 574, type IIIC with mechanical switches /
safety relay for mechanical switches or 2-channel fail-safe sensors/switches
(e.g. ESPE to EN 61496-1) with contact output with simultaneity monitoring (→
chapter 8.4).
• Safety relay for e-stop, for two-channel fail-safe sensors/switches (e�g� ESPE
to EN 61496-1) with contact output without simultaneity monitoring (indefinite
simultaneity) or for mechanical switches (→ chapter 8.5).
ifm electronic gmbh assumes no liability for the use of units made by
external manufacturers�
The safe state is when the output contacts 13-14, 23-24, 33-34, 43-44,
67-68 or 77-78 are open and the output contact 51-52 is closed�
4.1 Requirements for the hardware configuration
The following requirements must be met when using the G1502S safety relay:
4.1.1 Product-independent requirements
It must be ensured that the safety requirements of the respective application
correspond to the requirements stated in these instructions�
The specified technical data indicated in these instructions must be complied with�
The principle of normally closed operation must be applied to all external safety
circuits connected to the system�
