AB 1756-PA75R
AB 1756-PA75R
AB 1756-PA75R
AB 1756-PA75R
AB 1756-PA75R
AB 1756-PA75R
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1756-PA75R

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Allen-Bradley 1756-PA75R is a 75 W ControlLogix AC redundant power supply for critical chassis applications.
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Technical specifications for 1756-PA75R

  • Manufacturer:
    Allen-Bradley
  • Part Number:
    1756-PA75R
  • Product Family:
    ControlLogix
  • Product Type:
    AC Redundant Power Supply
  • Stock:
    1
  • Nominal input:
    120/240 V AC, 50/60 Hz
  • Input voltage range:
    85...265 V AC
  • Input frequency range:
    47...63 Hz
  • Maximum input power:
    120 VA / 115 W
  • Maximum output power:
    75 W at 0...60 °C
  • Maximum inrush current:
    20 A
  • Hold-up time:
    2 cycles at 60 Hz; 2 cycles at 50 Hz
  • Current capacity:
    1.5 A at 1.2 V; 4 A at 3.3 V; 13 A at 5.1 V; 2.8 A at 24 V
  • Annunciator rating:
    240 V AC 50/60 Hz or 240 V DC, 50 mA, resistive only
  • Isolation voltage:
    250 V continuous reinforced insulation; type-tested at 3250 V DC for 60 s
  • Redundant power cable:
    1756-CPR2, 0.91 m
  • Chassis adapter:
    1756-PSCA2
  • Compatible chassis:
    1756-A4/B, 1756-A7/B, 1756-A10/B, 1756-A13/B, or 1756-A17/B
  • Product dimensions:
    14.5 × 17.5 × 13.7 cm width × height × depth, approximate
  • Operating temperature:
    0...60 °C
  • Weight:
    1.45 kg
  • Tariff Code:
    8504401990
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Redundancy Power Output Hardware Application
  • Two supplies share the chassis current and one supply can carry the full load after the other fails
  • The AC input range is 85...265 V at 47...63 Hz with 75 W maximum output
  • A complete redundant system uses two power supplies, two 1756-CPR2 cables, and one 1756-PSCA2 adapter

1756-PA75R is an Allen-Bradley ControlLogix AC redundant power supply designed to add uptime protection for critical chassis applications.

A pair of remotely mounted supplies shares chassis current through 1756-CPR2 cables and a 1756-PSCA2 adapter; if one supply fails, the other accommodates the entire chassis load without interrupting chassis activity.

Before installation or replacement, verify Series A hardware, compatible Series B or Series C chassis, pair configuration, cable and adapter catalog numbers, AC input, chassis load, annunciator wiring, grounding, and mounting clearance.

Availability, condition, price, and shipping time for 1756-PA75R are confirmed during quotation.

Allen-Bradley 1756-PA75R AC Redundant Power Supply Manuals, Datasheets, Links

Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.

  • Two remotely mounted supplies share the current required by the ControlLogix chassis
  • If one supply fails, the remaining supply accommodates the entire chassis load without interrupting chassis activity
  • The redundancy design covers power-supply anomalies and does not make the chassis adapter or cables redundant
  • The nominal input is 120 or 240 volts AC at 50 or 60 hertz
  • The specified input range is 85 to 265 volts AC at 47 to 63 hertz
  • Maximum output power is 75 watts throughout the documented 0 to 60 °C operating range
  • A redundant system uses two 1756-PA75R supplies and two 1756-CPR2 cables
  • The 1756-PSCA2 passive adapter funnels power to the chassis backplane connector
  • 1756-PA75R is documented with 1756-A4/B, 1756-A7/B, 1756-A10/B, 1756-A13/B, and 1756-A17/B chassis
  • Critical ControlLogix chassis applications requiring additional uptime protection
  • Single-chassis ControlLogix redundant power-supply configurations
  • Two-chassis ControlLogix systems using a separate redundant supply pair for each chassis
Description
1756-PA75R is an Allen-Bradley ControlLogix AC redundant power supply for critical chassis applications.

Two supplies share the chassis current through 1756-CPR2 cables and a 1756-PSCA2 adapter, while either supply can carry the complete chassis load if the other supply fails.

Before installation or replacement, confirm the complete catalog number, Series A supply, compatible Series B chassis, paired supply, cables, adapter, AC input, load calculation, annunciator wiring, grounding, and clearances.
Revisions

Revision Part #

Also known as

1756-PA75R Ser A
1756-PA75R/A, Series A, Rev A
Alternative Names
1756-PA75R 1756PA75R 1756 PA75R Allen-Bradley 1756-PA75R Rockwell Automation 1756-PA75R AB 1756-PA75R ControlLogix 1756-PA75R
Technical notes
1756-PA75R redundancy protects against one supply failure only; verify Series A hardware, compatible Series B chassis, two-supply load capacity, 1756-CPR2 cables, 1756-PSCA2 adapter, AC input, annunciator wiring, grounding, and clearance.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What do the status indicators on Allen-Bradley 1756-PA75R mean?
A steady green Power indicator with the yellow Non-red indicator off means that the redundant supplies are operating normally. Steady green together with steady yellow means that this supply is operating but is currently the only supply powering the chassis adapter.
How does the annunciator contact on Allen-Bradley 1756-PA75R operate?
The solid-state annunciator contact is closed during normal operation. It opens when the associated supply fails or when the connected redundant supplies are switched off, allowing a monitoring device or controller input to report the condition.
What restrictions apply to Allen-Bradley 1756-PA75R annunciator wiring?
The annunciator cable must be shorter than 10 m. Its output is intended only for resistive loads and must not directly operate an electromagnetic relay coil; annunciator wiring should also be routed separately from power wiring.
Which power wiring is specified for Allen-Bradley 1756-PA75R?
Use 2.5 mm² (14 AWG) solid or stranded copper wire rated for at least 90 °C. Tighten the terminals to 0.565 N·m, connect no more than one conductor to each terminal, and install a 15 A time-delay fuse in every ungrounded power connection.
Does Allen-Bradley 1756-PA75R require a 120/240 V input-selection jumper?
No. Its voltage input is auto-sensing, so Rockwell instructs users not to install a 120/240 V AC selection jumper.
Can one Allen-Bradley 1756-PA75R be replaced while the other supply remains operational?
Yes. One redundant supply can be replaced while the remaining supply operates temporarily in non-redundant mode without interrupting chassis operation. In hazardous areas, removal is permitted only after the applicable power is removed or the area is confirmed nonhazardous.
What should be checked before installing Allen-Bradley 1756-PA75R?
Confirm Series A, chassis Series, paired-supply capacity, cables, adapter, AC input, annunciator wiring, grounding, mounting, and clearances.