Delta AH500 - External Wiring; LED Indicators

AH500 Module Manual
5-16

External wiring
(1) AH04PT-5A
Shielded cable 1*
1.53mA
(Ni100Pt100,
Resi stor)/
204.8uA
(Pt1000)*3
,
AG
ADC
AG
IN A
AG
CH 0
0~30 0
Ni1 00/Ni1000
Pt1 00/Pt1000
Ω
O0 +
I0+
I0 -
O0 -
FG
2-Wir e
CH 1
0~ 300
Ni100/N i10 00
Pt100 /Pt1 000
Ω
O1 +
I1+
I1-
O1-
FG
3-Wire
CH 3
O3 +
I3+
I3-
O3-
FG
4-Wire
Ni 100/Ni100 0
Pt100/Pt100 0*2
Shielded cable 1*
Shielded cable 1*
*1. The cables or the shielded twisted pair cables for Ni100/Ni1000/Pt100/Pt1000 temperature
sensors are used, and should be kept separate from other power cables and cables which
generate noise. Please use a three-wire temperature sensor. If users want to use a two-wire
temperature sensor, On+ and In+ have to be short-circuited, and On- and In- have to be
short-circuited. (n is in the range of 0 to 3.)
*2. If users want to measure the resistance in the range of 0 Ω to 300 Ω, they can use a two-wire
or three-wire sensor instead of a four-wire sensor.
*3. User need to select an appropriate sensor. If a Ni100 temperature sensor, a Pt100 sensor,
and a resistance sensor are used, the internal excitation current is 1.53 mA. If a Ni1000
temperature sensor, and a Pt1000 temperature sensor are used, the internal excitation
current is 204.8 μA.
5.1.10 LED Indicators
Number
Name
Description
1
RUN LED
indicator
Operating status of the module
ON: The module is running.
OFF: The module stops running.
2
ERROR LED
indicator
Error status of the module
ON: A serious error occurs in the module.
OFF: The module is normal.
Blink: A slight error occurs in the module.