ABB CL-LMR 18AC2 Series User Manual

Wiring with the logic relay
86
1SVC 440 795 M0100
Rules for wiring relay coils
To ensure a clear overview of all relay states only assign the
same coil function once to a relay (
ä, S, R). However,
retentive coil functions such as
ä, S, R can be used several
times if required by the circuit diagram logic.
Exception: When using jumps to structure a circuit diagram,
this coil function can also be used effectively several times.
Relay with contactor function
Ä
The output signal follows immediately after the input signal
and the relay acts as a contactor.
Figure 39: Signal diagram of contactor function
Display in the logic relay:
• Output relays Q:
ÄQ1 to ÄQ8 (depending on type)
•Markers M, N:
ÄM1 to ÄM16, ÄN1 to ÄN16
• Function relays (Text) D: ÄD1 to ÄD16
• Output relays S: ÄS1 to ÄS8
•Jumps: Ä:1 to Ä:8
h
The coil functions Ä, Å, è, È, (contactor, contactor
negated, cycle pulse falling, rising edge) must only be used
once for each relay coil. The last coil in the circuit diagram
determines the status of the relay.
When controlling a contactor or relay, the control coil
is only present once. Create parallel circuits or use Set,
Reset as a coil function.
on
on

ABB CL-LMR 18AC2 Series Specifications

General

Rated Voltage	250 V AC
Category	Relays
Output	2 c/o (SPDT) contacts
Terminal Type	Screw Terminal
Contact Configuration	2 c/o (SPDT) contacts
Electrical Life	100, 000 operations
Mechanical Life	10, 000, 000 operations

Summary

Logic relay

Installation

Danger of electric shock

Highlights crucial safety rules to prevent electrical hazards during installation.

Mounting

Connecting the power supply

Explains the procedures for connecting AC and DC power supplies to the logic relay.

Connecting the inputs

Guides on wiring various types of digital and analog inputs to the logic relay.

Connecting outputs

Explains how to connect relay and transistor outputs to loads like contactors and motors.

Commissioning

Creating your first circuit diagram

Offers a step-by-step guide to wiring and creating a basic CL circuit diagram.

Testing the circuit diagram

Wiring with the logic relay

Analog value comparator/threshold value switch

Explains the use of analog comparators for threshold switching and comparing input values.

CL settings

Password protection

Covers setting up password protection for unauthorized access to the logic relay.

Setting date and time

Startup behaviour

Retention (non-volatile data storage)

Explains how actual values and settings are retained after power loss or device reset.

Inside the logic relay

Delay times for inputs and outputs

Monitoring of short-circuit/overload with CL-LST, CL-LMT and CL-LET

Details how to monitor outputs for short-circuits or overloads using internal inputs.

Saving and loading circuit diagrams

Memory module

CL-SOFT

CL-SOFT

Introduces the PC software for creating, storing, test and managing CL circuit diagrams.

What happens if …?

Messages from the CL system

Possible situations when creating circuit diagrams

Provides troubleshooting steps for common issues encountered during circuit diagram creation and operation.

Appendix

Technical data

Contains comprehensive technical specifications covering environmental, mechanical, and electrical data.