HollySys LK Series User Manual

Chapter 7 IO Module
260 Beijing HollySys Intelligent Technologies Co., Ltd. All Rights Reserved
LK441 8-channel Thermocouple Analog Input Module
Line broken detection
5
When an line broken occurs, the diagnosis byte reports 0xA6.
The measured channel data reports the full-range valule or the normal value prior to the
line broken
Line broken Detection of
Cold Junction Compensation
Thermal Resistance
When an line broken occurs to the RTD temperature compensation channel, Channel 9
diagnosis byte reports 0xA6, taking the normal value prior to the line brea as the
compensated value
Hot Plugging
Supported
Physical Property
Protection Key
B1
Installation Position
Extension backboard
35 mm×100 mm×100 mm
Enclosure Protection Rating
IEC60529 IP20
Weight
180 g
7.8 LK620 2-channel counting module
The LK620 is an ordinary counting module that can be mounted on an expansion backplane.
7.8.1 Basic Features
 Double circuit counters
 Two-way counting, frequency measurement
 Z signal inversion
 Function of store count value
 Debounce filtering
 Function of disable counter
 Programming mode output
 Fault mode output
 Field power failure detection
 System and field isolation
 Support for PROFIBUS-DP slave station protocol
 Hot swapping
7.8.2 Operating Principle
The dual channel counting module has two independent counters, each with three-way inputs (A, B, Z)
and two-way digital outputs.
5
Refer to the chapter 7.7.6.1 Optional Alarms for the range supporting Line Break Alarm.

HollySys LK Series Specifications

General

Brand	HollySys
Model	LK Series
Category	Controller
Language	English