Safety Monitoring Relays SR203M & SR203AM Dual-Channel Safety Monitoring Relay Power requirementsthe SR203M/A will accept 24 VAC/DC or 115 VAC Inputsthe SR203M/A will accept single or dual N/C inputs or dual PNP inputs from a light curtain Outputsthe SR203M/A has 3 N/O outputs to route power to the coils of power contactors, plus 1 N/C auxiliary output for signaling purposes External Device Monitoring (EDM) is provided with a N/C loop between S12 and S34 on the SR203M/A Monitored manual reset model SR203M or automatic reset model SR203AM The SR203M/A have removable terminal blocks R Specifications C US Conforms to EN60204-1, EN ISO 13849-1, ISO TR 12100 SR203M01 & SR203M02 & UL and C-UL listed Electrical All Models SR203AM01 SR203AM02 Power Supply: 10%, 50-60 Hz 24 VAC/DC 115 VAC Power Consumption: Approx. 2 W Safety Inputs: 1 N/C or 2 N/C or 2 PNP (light curtain) Outputs: 3 N/O safety, 1 N/C auxiliary Output Rating AC: Inductive AC-15, 5 A/230 VAC Output Rating DC: Inductive DC-13, 3 A/24 VDC Min Switched Current/Voltage: 10 mA/10 V Impulse Withstand Voltage: 2500 V Max Drop-Out Time: 15 ms (while energized) Max Output Fuse: 10 A quick-acting or 6 A slow-acting Reset Mode: Monitored manual (SR203M) or auto/manual (SR203A) External Device Monitoring (EDM): N/C loop S12-S34 Mechanical Mounting: 35 mm (1.38 in.) DIN rail Case Material: Polyamide PA6.6 2 Max Wire Size: 0.2 to 4 mm (24-12 AWG) Weight: 210 g (7.4 oz.) 260 g (9.2 oz.) Color: Red External Switches: None Indication: Green = Power, Green = CH1 Closed, Green = CH2 Closed 6 Mechanical Life: 2 x 10 operations Environmental Enclosure Protection: IP20 terminals, IP40 (NEMA 1) housing Operating Temperature: -5 to 55C (23 to 131F) Humidity: 90% RH Compliance Standards: EN 60204-1, EN 954-1, ISO TR12100 Approvals/Listings: CE marked for all applicable directives, UL and C-UL Reliability Data per EN ISO 13849-1: Cat. 4, PLe, PFHd 1.45E-09 Specifications are subject to change without notice. Note: The safety contacts of the STI switches are described as normally closed (N/C)i.e., with the guard closed, actuator in place, and the machine able to be started. www.omron247.com 1SR203M & 203AM Safety Monitoring Relays Application L1 Reset E-Stop L1 L2 L3 A1 S11 S52 S12 13 23 33 41 K1 SR203M K2 S21 S22 S34 A2 14 24 34 42 K1 K2 M N Output Contact Arrangements Terminal Pin Assignments 14 S21 A1 13 24 S22 S11 23 34 S34 S52 33 42 A2 S12 41 SR103AM Terminal Connections 13 23 33 41 A1 S52 S21 S34 SAFETY SAFETY SAFETY AUXILIARY INPUT 1 INPUT 2 EDM AND SUPPLY OUTPUT 1 OUTPUT 2 OUTPUT 3 SIGNALING N/C N/C RESET N/O N/O N/O N/C A2 S12 S22 S12 34 42 14 24 2 www.omron247.com