ABB CL-LMR 18AC2 Series User Manual

Wiring with the logic relay
186
1SVC 440 795 M0100
Function of the CL circuit diagram:
Start/Stop of circuit with the external actuators S1 and S2.
The mains contactor starts the timing relay in the logic relay.
• I1: Mains contactor switched on
• Q1: Star contactor ON
•Q2: Delta contactor ON
• T1: Star-delta changeover time (10 to 30 s, X)
• T2: Wait time between star off, delta on
(30, 40, 50, 60 ms, X)
If your logic relay has an integral time switch, you can combine
star-delta starting with the time switch function. In this case,
use the logic relay to switch the mains contactor as well.
4x shift register
You can use a shift register for storing an item of
information, such as for the sorting of parts into good and
bad, for two, three or four transport steps further on.
A shift pulse and the value (0 or 1) to be shifted are needed
for the shift register.
The shift register’s reset input is used to clear any values that
are no longer needed. The values in the shift register go
through the register in the order: 1st, 2nd, 3rd, 4th storage
location.
Figure 75: Block diagram of the 4x shift register
I1u------DD1
dt1----ÄQ1
dT1----DD2
hT2----ÄQ2
1
234
Storage positions
PULSE VALUE RESET

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.