Cathay Tri-Tech. Inc CTR003C 사용자 설명서
6
3. Interface specification
3.1. IO port
IO port specification
Items
Standard
Remarks
Digital input
Number of input
6 channels
pulesｘ４：PI1～PI4、GND
contactｘ2：DI1～DI2、GND
contactｘ2：DI1～DI2、GND
Input format
Photo coupler non insulated
Pull up resistor（1.8kΩ）
Input voltage
DC5V～24V（±1V）
Same as power input voltage
Input current
OFF： less than 0.1mA
ON：more than 1ｍＡ
ON：more than 1ｍＡ
Chattering
removal
removal
＜1ms
More than 1ms supposed to be
soft configuration, capable
to be range 10～100ms
to be range 10～100ms
Response speed
＜10ms
Digital output
Number of output 1 channels
DO+、DO-
Output format
Photo coupler, open collector
output
output
Output voltage
MAX DC12V
Output current
MAX 20mA（per 1 point）
Output
ON
residual current
Less than 1V（output current＜20
ｍA）
ｍA）
Analog input
Number of input
4channels
AI1+、AI1-～AI4+、AI4-
Input format
DC input of 4-20mA sensor
AC input of current sensor CT
AC input of current sensor CT
AC and DC use 4CH
By setting it is capable to
convert input format
By setting it is capable to
convert input format
Termination
resistance
resistance
AC：8Ω、120Ω、1.8KΩ
4-20mADC：120Ω
4-20mADC：120Ω
When
AC
is
used,
it
automatically
convert
resistance
depending
on
current range of signal source
Measurement range
（current）
（current）
AC： 0.01～125mAAC
4-20mADC：０～25mADC
4-20mADC：０～25mADC
Numbers indicated by AC are 3
resistance patterns and total
range
resistance patterns and total
range
Measurement
accuracy
accuracy
AC：±2%F.S.
4-20mA：±1%F.S.
4-20mA：±1%F.S.
Conversion rate 10 times／sec
Analog output
Number of output 1 channel
Output format
Op amp output
Output voltage
DC1.5V±1.4V
Output current
MAX 20mA（per 1 point）
Output
ON
residual current
Less than 1V（output current＜20
ｍA）
ｍA）
Power output
Number of input
4 channels
output voltage
DC5V～24V（±0.45V）
Same as power input voltage
Output current
MAX 1800mA
When AC adaptor is used, it will
be total current value of 4
channels
be total current value of 4
channels