HollySys LK Series User Manual

Chapter 7 IO Module
Beijing HollySys Intelligent Technologies Co., Ltd. All Rights Reserved 231
LK412 6-channel Isolation Analog Input Module
Data
Format
32768~65,535
0~32,767
0~65,535
0~65,535
Range Code
70
71
Max. Measurable
Range
Current
signal
0~20.58 mA
4~20.58 mA
Data
Format
0~65,535
0~65,535
Input Impedance
Voltage
Signal
＞
1 M

Current
signal
250 Ω
ADC Resolution
16-bit
Full-channel Scanning Time (with
no software filtering)
＜
50 ms (with no software filtering)
Differential Mode Rejection Ratio
＞
60 dB
Common Mode Rejection Ratio
＞
90dB
Measurement Accuracy
0.1% F.S.@25
℃
Repeatability precision
0.02% F.S.@25
℃
Calibration Accuracy
0.03% F.S.@25
℃
Step Response
The time reaching to 90% of the target value below 1 s
Temperature Drift
±25 ppm/
℃
Failure Diagnosis and Hot Plug
Calibration Data Error Detection
When powered on, if the calibration data is wrong, the device diagnosis byte then
reports 0xA2. If the data is correct, it then does not report
Over range alarm
When the signal exceeds the upper/lower limit of the range, the diagnosis byte then
reports 0xA3/0xA2
Over-limit alarm
When the signal exceeds the upper/lower limit of the alarm, channel the diagnosis
byte then reports 0xA7/0xA8
Line broken detection
When the channel is broken, the channel diagnosis byte then reports 0xA6. When
the fault recovered, it then reports 0xA0
Hot Plugging
Supported
Isolated and voltage withstand
Channel-to-system
To test for 1 minute based on 500 VAC, with a leaking current 5 mA
Channel-to-channel
To test for 1 minute based on 500 VAC, with a leaking current 5 mA
Physical Property
Protection Key
A0
Installation Position
Extension backboard
Module Dimension (W*H*D)
35 mm×100 mm×100 mm
Enclosure Protection Rating
IEC60529 IP20
Weight
190 g

HollySys LK Series Specifications

General

Brand	HollySys
Model	LK Series
Category	Controller
Language	English