Allen-Bradley – 1756-PLS ControlLogix Prog Limit Switch Module

MPN: 1756-PLS · Brand: Rockwell Automation / Allen-Bradley

Price on request

Discontinued by Rockwell Automation / Allen-Bradley — we can still source the original 1756-PLS (new, used or refurbished, subject to availability). Request a quote below.

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12-month warranty (new) · 3-month (used/refurbished)

30-day returns, no restocking fee on unused parts

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Quick facts

Availability	Confirmed on request
Category	ControlLogix I/O Modules
Lifecycle	Discontinued
Warranty	12-month (new) · 3-month (used/refurbished)

Shipping & availability

Can I still buy the 1756-PLS now that it is discontinued?

Yes. Rockwell Automation / Allen-Bradley has discontinued the 1756-PLS, but sourcing discontinued parts is what PartnerPLC specialises in — new old stock, used and refurbished units. Request a quote and we'll confirm availability, condition and lead time.

When can 1756-PLS be shipped?

1756-PLS is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up 1756-PLS in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for 1756-PLS and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for 1756-PLS, subject to availability and destination.

Allen-Bradley 1756-PLS — ControlLogix Prog Limit Switch Module. Discontinued by Rockwell Automation on December 31, 2025. PartnerPLC supplies new, surplus and discontinued Allen-Bradley parts — request a quote for price, condition and lead time.

Specifications

Product

Lifecycle	Discontinued
Discontinued date	December 31, 2025
Replacement category (Rockwell)	No planned RA replacement
Repair options available	Yes

Specifications

Input Signal	Resolver: 2Vrms Ref
Isolation	250 V continuous between
Output Signal	Digital Outputs: 10-31V DC
Accuracy	±0.0976% of full scale
Angular resolution per bit	0.088 °
Compatible resolver	Allen-Bradley resolver 846-SJxxxx-R3-x (x = customer options)
Conducted RF immunity	10V rms with 1 kHz sine wave 80% AM from 150 kHz...80 MHz on shielded signal ports
Current draw	1mA @ 5.1V, 125mA @ 24V
Current limit	<4 A
Current per group, max	4A @ 30°C (86 °F)
Current per module, max	8A @ 30°C (86 °F)
Current per point, max	1A @ 30°C (86 °F)
Digital count	0...4095 (decimal)
Digital inputs configurable	true
Digital outputs configurable	false
Digital resolution	12 bit
EFT/B immunity	±4kV @ 5kHz on unshielded I/O and power ports, ±2kV @ 5kHz on shielded resolver ports
Emissions	IEC 61000-6-4
Enclosure type	None (open-style)
ESD immunity	6 kV contact discharges, 8 kV air discharges
Input delay time	OFF to ON: <15 µs @ 30 °C (86 °F), <150 µs @ 60 °C (140 °F), ON to OFF: <30 µs @ 30 °C (86 °F), <200 µs @ 60 °C (140 °F)
Input impedance, max	3.3 kΩ @ 24V DC
Isolation voltage	250V (continuous), basic insulation type, I/O-to-backplane, I/O group-to-group, resolver-to-backplane, and resolver-to-I/O
Load current per point, min	40 mA
Module configuration	Left section: two groups of four outputs and four inputs each, Center section: resolver interface and I/O control, Right section: two groups of four outputs and four inputs each
Nonoperating temperature	-40 °C
North American temperature code	T4
Off-state current, max	1.5 mA
Off-state leakage current per point, max	300mA @ 60°C (140 °F)
Off-state leakage current per point, nom	<10 µA @ 60 °C (140 °F)
Off-state voltage, max	5V DC
ON-state current	3 mA
ON-state voltage, max	31.2V DC @ 31.2V DC
On-state voltage, min	10V DC @ 10V DC
On-state voltage, nom	10.8...26.4V DC @ 10.8...26.4V DC
Operating temperature	0 to 60 °C
Operating voltage	10.8...31.2V DC @ 10...31.2V DC
Output delay time	Off to On: <15 µs @ 60 °C (140 °F), ON to OFF: <25 µs @ 60 °C (140 °F)
Output power dissipation	3.2 W @ 60 °C (140 °F)
Outputs	16 (2 groups of 4 per I/O section)
Output switching time	Switching 1A @ 24V DC
Output voltage drop, max	0.55V DC
Power dissipation, max	25.7 W @ 30 °C (86 °F), 21.3 W @ 60 °C (140 °F), 2.8 W @ 60 °C (140 °F), 6 W @ 30 °C (86 °F), 3.8 W @ 60 °C (140 °F)
Power dissipation, nom	22.62 W @ 30 °C (86 °F), 18.22 W @ 60 °C (140 °F), 1.86 W @ 60 °C (140 °F), 5.4 W @ 30 °C (86 °F), 3.2 W @ 60 °C (140 °F)
Radiated RF immunity	10 V/m with 1 kHz sine-wave 80% AM from 80...2000 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 900 MHz, 10 V/m with 200 Hz 50% Pulse 100% AM @ 1890 MHz, 3 V/m with 1 kHz sine-wave 80% AM from 2000...2700 MHz
Redundancy	false
Reference frequency	5 kHz ±20%
Reference voltage	2V rms ±20%
Relative humidity	5...95% noncondensing
Repeatability	±0.0488% of full scale
Resolver interface	2V rms, reference output (differential pair), 2V rms, sine and cosine inputs (two differential pairs)
Resolver location	Center section
Reverse polarity protection	Yes, Yes, current limited. (If wired incorrectly, outputs can be permanently disabled.)
RTB keying	User-defined mechanical
Shock	Operating: 30 G, Non operating: 50 G
Short circuit protection	Electronic (No indication of fault. Remove load and toggle on/off to restore.)
Short-circuit protection, outputs available	false
Slot thermal dissipation	10.93 BTU/hr @ 60 °C (140 °F)
Slot width	3
Suitable for safety functions	false
Surge current per point	2 A for 10 ms every 1 s @ 60 °C (140 °F)
Surge transient immunity	±1 kV line-line (DM) and ±2 kV line-earth (CM) on unshielded I/O and power ports, ±2 kV line-earth (CM) on shielded resolver ports
Surrounding air temperature, max	60 °C
Thermal dissipation, max	87.74 BTU/hr @ 30 °C (86 °F), 72.72 BTU/hr @ 60 °C (140 °F), 9.56 BTU/h, 21.48 BTU/hr @ 30 °C (86 °F), 11.93 BTU/hr @ 60 °C (140 °F)
Thermal dissipation, nom	77.23 BTU/hr @ 30 °C (86 °F), 62.2 BTU/hr @ 60 °C (140 °F), 6.35 BTU/h, 18.43 BTU/hr @ 30 °C (86 °F), 10.93 BTU/hr @ 60 °C (140 °F)
Total backplane power	8.1 W
Tracking rate, max	±1800 RPM
Type of electric connection	Screw connection
Vibration	2 G @ 10...500 Hz
Voltage category	12/24V DC @ 12/24V DC
Voltage type of supply voltage	DC
Wire category	2 on signal ports, 1 on power ports