ABB CL-LMR 18AC2 Series User Manual

Wiring with the logic relay
100
1SVC 440 795 M0100
In the circuit diagram above, I1 enables both analog value
comparators. If a value goes below the set value, A1 switches
output Q1. If another value exceeds the set value, A2
deactivates output Q1. A3 switches marker M1 on and off.
Table 10: Parameter display and parameter set for analog value
comparator:
A1 EQ +
I1 +0 Æ
F1 +0
I2 +0 æ
F2 +0
OS +0
HY +0
A1 Analog value comparator function relay 1
EQ Equal mode
The function relay has the following modes:
•
LT: less than
• LE: less than/equal to
•
EQ: equal to
• GE: greater than/equal to
• GT:greater than
+ + appears in the PARAMETER menu.
- does not appear in the PARAMETER menu
I1 Comparison value 1 (positive value I7, I8, I11, I12,
actual value T1 to T16, C1 to C16)
F1 Gain factor for I1 (I1 = F1 × actual value at I1); F1 =
positive value from 0 to 9999
I2 Comparison value 2 (positive value I7, I8, I11, I12,
actual value T1 to T16, C1 to C16)
F2 Gain factor for I2 (I2 = F2 × actual value at I2); F2 =
positive value from 0 to 9999
OS Offset for the value of I1 (I1 = OS + actual value at
I1); OS = positive value from 0 to 9999
HY Switching hysteresis for value I2
Value HY applies both to positive and negative
hysteresis.
•
I2 = Actual value at I2 + HY;
• I2 = Actual value at I2 - HY;
•
HY = Positive value from 0 to 9999
h
Work normally with analog inputs and setpoints as the
parameters for the analog value comparator.

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.