Technical specifications for 1756-PAR2

Part Number/Catalog No.	1756-PAR2
Brand	PLC MOUDLE
1756-PA75R Nom Input Voltage	120/240VAC
1756-PA75R Input Voltage Range	85-264VAC
Max Inrush Current	20 Amperes
Current Capacity	1.5 A at 1.2VDC; 4A at 3.3VDC; 13 A at 5.1VDC and 2.8 A at 24VDC
Output Power	75 W @ 0…60 °C (32…140 °F)
Annunciator Power	240V AC 50/60 Hz, 240V DC, 50 mA, resistive only
Hold Up time	2 cycles @ 60 Hz; 2 cycles @ 50 Hz
Chassis Compatibility	1756-A4, 1756-A7, 1756-A10, 1756-A13, 1756-A17

The 1756-PAR2 is a bundled system consisting of components from the ControlLogix product family. It includes two power supplies (model 1756-PA75R), two power supply cables (model 1756-CPR2), and one chassis adapter module (model 1756-PSCA2).

The 1756-PA75R is a redundant power supply designed for use in critical applications requiring minimal downtime. It provides fail-safe protection and ensures continuous operation. This power supply supports an input voltage range of 85-264VAC (47-63 Hz) with a nominal input of 120/240 VAC and a nominal frequency of 50/60 Hz. It delivers a maximum output power of 75 Watts, with current capacities of 1.5 A at 1.2 VDC, 4 A at 3.3 VDC, 13 A at 5.1 VDC, and 2.8 A at 24 VDC. The 1756-CPR2 cable is used to connect the two power supplies for synchronization and internal communication. The cable is 0.91 meters (3 feet) long, with a minimum bend radius of 12.7 cm (5 inches).

The 1756-PSCA2 is a passive chassis adapter that consolidates power from both power supplies to the single power connector on the chassis backplane. This component allows users to easily configure a redundant control system while minimizing the risk of overlooking essential components in large or complex setups.

To set up the 1756-PAR2 power supply, attach one standard power supply to the left end of the framework and connect it directly to the backplane. This unit is built with durable technology to withstand extreme temperatures and harsh environments. The redundant power supply system ensures extra uptime protection for systems used in critical applications, funneling power through the chassis adapter to the backplane.

For a complete redundant power supply setup, components such as two bundled systems are required. One system includes two 1756-PA75R power supplies, two 1756-CPR2 cables, and one 1756-PSCA2 chassis adapter, while the other system contains two 1756-PB75R power supplies, two 1756-CPR2 cables, and one 1756-PSCA2 chassis adapter, along with a redundant AC power supply, redundant DC power supply, a redundant power supply cable (3 feet), a redundant power supply chassis adapter, and annunciator wiring (up to 10 meters or 32.8 feet).

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