Delta AH500 User Manual

Chapter 5 Temperature Measurement Module AH04PT/AH08PTG
5-3
5.1 AH04PT-5A
5.1.1 Overview
The specifications for a temperature measurement module, the operation, and the programming are
described in this section. AH04PT-5A is a temperature measurement module. It converts the
temperatures received from its four thermocouples into digital signals. Users can select the degree
Celsius or the degree Fahrenheit as a unit of measurement for temperature.
5.1.2 Characteristics
(1) A sensor is selected according to practical application.
Pt100/Ni100/Pt1000/Ni1000 sensor
(2) High-speed conversion
Two-wire/Four-wire configuration: 150 ms/channel
Three-wire configuration: 300 ms/channel
(3) High accuracy
Conversion accuracy: The error is ±0.5% of an input. (The ambient temperature is 25±5°C.)
(4) Disconnection detection
When a sensor is disconnected, AH04PT-5A gives an alarm or a warning.
(5) PID control
An object can be maintained at a desired temperature through a PID control action.
(6) A module can be set by means of utility software.
HWCONFIG is built-in utility software in ISPSoft. Users can set modes and parameters in
HWCONFIG to complete hardware configuration without spending time writing a program to set
registers corresponding to functions.
5.1.3 Specifications
Electrical specifications
Number of analog
inputs
4
Applicable sensor
Three-wire configuration: Pt100/Ni100/Pt1000/Ni1000 sensor, and
0~300 Ω input impedance
Two-wire/Four-wire configuration: Pt100/Ni100/Pt1000/Ni1000 sensor,
and 0~300 Ω input impedance
Pt100: DIN 43760-1980 JIS C1604-1989; 100 Ω 3850 PPM/°C
Pt1000: DIN EN60751; 1 kΩ 3850 PPM/°C
Ni100/Ni1000: DIN 43760
Supply voltage
24 V DC (20.4 V DC~28.8 V DC) (-15%~+20%)
Connector type
Removable terminal block
Overall accuracy
25°C/77°F: The error allowed is ±0.5% of full scale.
-20~60°C/-4~140°F: The error allowed is ±1% of full scale.
Conversion time
Two-wire/Four-wire Four-wire configuration: 150 ms/channel
Three-wire configuration: 300 ms/channel
Isolation
An analog circuit is isolated from a digital circuit by a digital integrated
circuit/an optocoupler, and the analog channels are isolated from one
another by optocouplers.
Isolation between a digital circuit and the ground: 500 V DC
Isolation between an analog circuit and the ground: 500 V DC
Isolation between an analog circuit and the digital circuit: 500 V DC
Isolation between the 24 V DC and the ground: 500 V DC

Delta AH500 Specifications

General

Brand	Delta
Model	AH500
Category	Controller
Language	English