1756-L8SPK

Technical specifications

Manufacturer

Allen-Bradley

Manufacturer part no.

1756-L8SPK

Type

Safety partner module

Application

PLC controller

Used with

ControlLogix 1756 chassis

Safety memory

Configured to match primary controller

Energy storage module

Embedded in controller, non-removable

Number of power cycles

80,000

Current draw @ 1.2V DC

5.0 mA

Current draw @ 5.1V DC

1.20 A

Power dissipation

6.2 W

Thermal dissipation

21.2 BTU/hr

Weight, approx

0.394 kg (.868 lb)

Slot width

1

Module location

Chassis slot immediately to the right of the primary controller

Chassis

1756-A4, 1756-A4K, 1756-A7, 1756-A7K, 1756-A10, 1756-A10K, 1756-A13, 1756-A13K, 1756-A17, 1756-A17K, Series B and Series C

Temperature code

T4

Enclosure type rating

None (open-style)

Temperature, operating (SIL 2/PLd)

0 °C ≤ Ta ≤ +60 °C (+32 °F ≤ Ta ≤ +140 °F) for Series C Chassis 0 °C ≤ Ta ≤ +50 °C (+32 °F ≤ Ta ≤ +122 °F) for Series B Chassis

Temperature, nonoperating

-40…+85 °C (-40…+185 °F) Chassis Series C and B

Relative humidity

5…95% noncondensing

Conformal coated

Yes

Vibration

IEC 60068-2-6 (Test Fc, Operating)

Shock, operating

IEC 60068-2-27 (Test Ea, Unpackaged Shock)

Emissions

IEC 61000-6-4

ESD immunity

IEC 61000-4-2

Radiated RF immunity

IEC 61000-4-3

EFT/B Immunity

IEC 61000-4-4

Surge Transient Immunity

IEC 61000-4-5

Conducted RF Immunity

IEC 61000-4-6

Technical documents (1)

• Rockwell Automation technical data 1756-TD001

Key features

• Conformally coated safety partner controller
• Safety memory configured to match primary controller
• Embedded, non-removable energy storage module
• Fits 1756 Series B and Series C chassis
• Operates from 0 °C to +60 °C in Series C chassis

About the Allen-Bradley 1756-L8SPK

The Allen-Bradley 1756-L8SPK is the GuardLogix 5580 Partner, described by Rockwell Automation as a GuardLogix 5580 Safety Partner Controller, conformally coated. Rockwell lists safety memory configured to match the primary controller, a slot width of 1 and an approximate weight of 0.394 kg. Power dissipation is given as 6.2 W, with current draw of 1.20 A at 5.1V DC and 5.0 mA at 1.2V DC. Rockwell names the 1756-L8SPXT as a Direct Replacement.

What is the 1756-L8SPK used for?

It works as the safety partner to the primary controller in a GuardLogix 5580 system, fitted in the chassis slot immediately to the right of that controller. For SIL 2/PLd, Rockwell lists an operating temperature of 0 °C to +60 °C in a Series C chassis and 0 °C to +50 °C in a Series B chassis. It is an open-style module with no enclosure type rating.

Lifecycle and successor

Phased out.

OEM successor: 1756-L8SPXT

Before you order

What to photograph or confirm so the right unit is quoted.

Check that the label shows catalog number 1756-L8SPK, and note the series letter and firmware revision printed on it. If you are unsure, send us a photo of the label and we will check it against the part.