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ControlLogix AC Redundant Power Supply
SKU: 1756-PA75R
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Short Description
Description:
The 1756-PA75R is a high-reliability AC power supply module intended for redundant power setups in ControlLogix systems.
It enables continuous operation by allowing two power supply to function together; if one fails, the other easily takes over without disrupting system performance.
Redundant Operation: Used in pairs to give constant power to the ControlLogix chassis.
External Mounting: Installed outside the chassis using the necessary adaptor (1756-PSCA2).
Status Monitoring: Includes LEDs and a solid-state relay for diagnostics and fault alerting.
Annunciator Support: Can link to external alarm systems to provide real-time failure indication.
Environmental Protection: Designed for industrial situations, with high isolation and temperature tolerance.
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Electrical Specifications:
Input Voltage Range: 85–265 V AC.
Frequency: 47–63 Hz.
Maximum Output Power: 75 W @ 0–60 °C (32–140 °F).
Isolation Voltage: 250 V continuous.
Dielectric Strength: Tested at 3250 V DC for 60 seconds.
Inrush Current: 20 A max.
Hold-Up Time:
5 cycles @ 85 V AC.
6 cycles @ 120 V, 200 V, and 240 V AC.
20 cycles @ 220 V AC.
Backplane Output Currents:
+3.3 V DC: 4.0 A.
+5.1 V DC: 13.0 A.
+24 V DC: 2.8 A.
Environmental Ratings:
Operating Temperature: 0–60 °C.
Humidity: 5% to 95% non-condensing.
Installation Location: External to chassis (requires 1756-PSCA2 adapter).
Redundancy Support: Automatic chassis load sharing with paired 1756-PA75R unit.
Status Monitoring: LEDs and solid-state relay for fault indication.
Physical Characteristics:
Dimensions: 14.2 × 17.5 × 13.2 cm.
Weight: 1.45 kg.
Compatible Chassis: ControlLogix Series B only.
Cable Requirement: Uses 1756-CPR2 annunciator cable (max 10 m).