1 Preliminary note The instructions are part of the unit� They are intended for authorised persons according to the EMC, Low Voltage and Machinery Directives and safety regulations� The instructions contain information about the correct handling of the product� Read the instructions before use to familiarise yourself with operating conditions, installation and operation�...
2 Safety instructions • Follow the operating instructions� • Improper use may result in malfunctions of the unit� This can lead to personal injury and/or damage to property during operation of the machine� For this reason note all remarks on installation and handling given in these instructions� Also adhere to the safety instructions for the operation of the whole installation�...
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 is switched off (zero-current state: logic...
4.1 Requirements for the hardware configuration The following requirements must be complied with when using the safety relay G1503S: 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�...
5 Structure and operating principle 5.1 Indicators and connections IN 1 OUT 1 POWER FAULT OUT 2 IN 2 Supply voltage (L-, L+), function terminals (Y1, Y2) Y4, Y5, Y6, Y7: Operating mode selection, auxiliary output S33, S34, S43, S44: Connection for safety inputs / outputs OUT 1 LED yellow: Triggering of the semiconductor output channel 1 OUT 2...
6 Installation ► Mount the unit on a DIN rail in a housing protected against dust and humidity (min� IP54 - degree of soiling 2)� 7 Electrical connection ► Use 60/75°C copper conductors only� 7.1 Supply voltage The external supply unit must have a safe separation� In case of a fault the voltage can exceed the value of 60 V DC for a maximum of 200 ms, but must not exceed the value of 120 V DC�...
7.2 Feedback contacts / monitored or automatic start Automatic start Automatic activation without monitoring� L- Y1 Y2 L+ Monitoring of the feedback contacts (normally closed) for automatic start Release is made when the feedback contacts are closed� Consider the current flowing through the feedback contacts (→...
7.3 Output circuit Connect the load ► Connect the load to be controlled to the semiconductor outputs C1 (13-14)� Adhere to the maximum and minimum load conditions (→ 10 Technical data). Output Y7 provides a non-safety related signal for communication to a PLC� The signal corresponds to the logical levels of the safe semiconductor outputs 13, 14�...
8 Connection - Function - Fault diagnosis The safety relay can be connected or used in different ways: 1� Safety relay for fail-safe sensors/switches with 2 PNP outputs (e�g� GM701S)� 2� Safety relay for clocked fail-safe sensors (e�g� GM504S)� 3� Relay for two-hand control to EN 574 with electronic sensors� 4�...
8.1 Safety relay for fail-safe sensors/switches with 2 PNP outputs Example of fail-safe sensors/switches: • Fail-safe inductive sensor GM701S • Light barrier • Light curtain (ESPE to EN 61496-1) • Laser scanner 8.1.1 Connection Fail-safe sensor/switch with a current consumption of ≤ 50 mA: G1503S 1: Fail-safe sensor/switch Fail-safe sensor/switch with a current consumption of >...
8.1.3 Fault diagnosis In case of a fault switch the safety relay off and on again� LED display Cause of the fault Troubleshooting • No voltage supply ► Check wiring • Overvoltage ► Check power supply • Connection A1/A3 or A1/A2 reversed •...
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LED display Cause of the fault Troubleshooting • Overvoltage ► Check wiring • Undervoltage ► Check power supply • Overvoltage ► Check wiring • Undervoltage ► Check power supply • Undervoltage ► Check wiring ► Check power supply • Short circuits ►...
8.2 Safety relay for clocked fail-safe sensors Example of fail-safe sensors/switches: • Fail-safe inductive sensor GM504S Up to 10 clocked fail-safe sensors can be connected to one safety relay� 8.2.1 Connection Connection of one fail-safe sensor/switch: G1503S 1: Fail-safe sensor/switch Connection of 2 fail-safe sensors/switches: G1503S 1: Fail-safe sensor/switch 1...
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The use of the safety splitter box E11569 is recommended: G1503S 1: Fail-safe sensor/switch 1 3: E11569 wh = white 2: Fail-safe sensor/switch 2 4: e�g� EVC014 bk = black 5: e�g� EVC001 bn = brown bu = blue Connection of 3 to 10 fail-safe sensors/switches: G1503S 1: Fail-safe sensor/switch 1 3: Fail-safe sensor/switch 3...
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The use of the safety splitter box E11569 is recommended: G1503S 1: Fail-safe sensor/switch 1 4: E11569 wh = white 2: Fail-safe sensor/switch 2 5: e�g� EVC014 bk = black 3: Fail-safe sensor/switch 3 6: e�g� EVC001 bn = brown bu = blue...
8.2.3 Fault diagnosis In case of a fault switch the safety relay off and on again� LED display Cause of the fault Troubleshooting • No voltage supply ► Check wiring • Overvoltage ► Check power supply • Connection A1/A2 reversed •...
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LED display Cause of the fault Troubleshooting • Short circuit S43/L+ or S34/S44 ► Check wiring • Missing clock ► Check wiring • Wiring fault • Connection A2/A3 exchanged • Short circuit S43/L- • Overvoltage ► Check wiring • Undervoltage ►...
Example of electronic sensors/switches: • Capacitive sensors For product selection see www�ifm-electronic�com This wiring meets the requirements type IIIB to EN 574� Use up to type IIIC is possible using corresponding sensors/switches with two independent switching elements, internal plausibility check and protected or screened wires�...
8.3.3 Fault diagnosis In case of a fault switch the safety relay off and on again� LED display Cause of the fault Troubleshooting • No voltage supply ► Check wiring • Overvoltage ► Check power supply • Connection A1/A3 or A1/A2 reversed •...
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LED display Cause of the fault Troubleshooting • Overvoltage ► Check wiring • Undervoltage ► Check power supply • Undervoltage ► Check wiring ► Check power supply • Short circuits ► Check wiring • Inputs S34 and S43 not ► Check wiring activated within 0.5 s (→...
8.4 Relay for two-hand control using mechanical switches with simultaneity monitoring Two-hand control with mechanical switches / safety relay for mechanical switches or 2-channel fail-safe sensors/switches with contact output with simultaneity monitoring� The contacts of the mechanical switches must allow a minimum current of 6 mA�...
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Connection of mechanical switches according to type IIIC to EN 574 G1503S 1: Mechanical switch 1 (no positively 2: Mechanical switch 2 (no positively driven driven contacts) contacts) Connection of a 2-channel fail-safe sensor/switch e�g� "electro-sensitive protective equipment" (ESPE) to EN 61496-1 G1503S 1: Contact 1 of the ESPE 2: Contact 2 of the ESPE...
8.4.3 Fault diagnosis In case of a fault switch the safety relay off and on again! LED display Cause of the fault Troubleshooting • No voltage supply ► Check wiring • Overvoltage ► Check power supply • Connection A1/A3 or A1/A2 reversed •...
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LED display Cause of the fault Troubleshooting • Undervoltage ► Check wiring ► Check power supply • Short circuits ► Check wiring • Inputs S34 and S43 not ► Check wiring activated within 0.5 s (→ 8.4.2) ► Deactivate inputs and •...
8.5 Safety relay for e-stop, for 2-channel fail-safe sensors/ switches with contact output without simultaneity monitoring or for mechanical switches The 2-channel fail-safe sensors/switches are for example "electro-sensitive protective equipment" (ESPE) to EN 61496-1� The contacts of the sensors/switches must allow a minimum current of 6 mA�...
8.5.2 Function Input circuit Output status LED display 1: Fail-safe sensor/switch 1 2: Fail-safe sensor/switch 2 3: Order and time difference insignificant (indefinite simultaneity) : N�O� contact activated...
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Input circuit Output status LED display : N�O� contact activated...
8.5.3 Fault diagnosis In case of a fault switch the safety relay off and on again! LED display Cause of the fault Troubleshooting • No voltage supply ► Check wiring • Overvoltage ► Check power supply • Short circuit ► Check wiring •...
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LED display Cause of the fault Troubleshooting • Connection A2/A3 exchanged ► Check wiring • Missing link Y4/Y5 ► Check wiring • Overvoltage ► Check wiring • Undervoltage ► Check power supply • Overvoltage ► Check wiring • Undervoltage ► Check power supply •...
9 Scale drawing 1: screw terminal (supplied) 10 Technical data G1503S Safety relay with semiconductor outputs Terminal block Phoenix Contact MSTBO Conforms to the requirements of: EN ISO 13849-1:2008+AC2009, category 4 PL e, SIL 3 (IEC 62061) Electrical design semiconductor (2 OSSD) Output function 2 safe short-circuit proof semiconductor outputs (positive switching), 1 signal output (positive switching)
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Current consumption < 500 mA Function display voltage (green), error (1 x red), output status (2 x yellow), input (2 x yellow) Power-on delay time < 6 s Duration of switch-off test pulses ≤ 500 µs Voltage drop (per OSSD) ≤...
11 Tests/approvals The safety relay G1503S was tested and certified by TÜV-Nord� The safety relay was developed and tested in accordance with, for example, the following directives and standards: • 2006/42/EC Machinery Directive • 2004/108/EC EMC Directive • 2014/30/EU EMC Directive (effective from 20 April 2016) •...
Probability of (dangerous) (PFH Failure per Hour Performance Level PL to EN ISO 13849-1 Safety Integrity Level SIL 1-4 to IEC 61508� Programmable Logic Controller Technical data and further information at www.ifm.com → Select your country → Data sheet direct:...