Main performance and functions

The AP900X model has the following characteristics:

(1) Equipped with programmable temperature function that can preset 30 segments, multiple groups, and multiple segments for free combination, multiple startup modes can be selected, any jump operation can be performed, and the current operating clock can be manually modified; When STA=0, it can be used as a constant value controller.

(2) Equipped with MODBUS communication interface.

(3) In the heating zone, in order to prevent significant deviations in the SV-PV when power is turned off and then turned on again, which may cause instantaneous high-power output damage to a certain system, a '3' option is specially selected in the STA menu to automatically start the PV and ensure that the SV-PV=0 deviation when power is turned on again.

(4) There are two options for ending the program control using the 'END/0-1' menu.

(5) The second output port inside the machine can be configured not only for PV or SV transmission output, but also as a secondary control second channel 4-20mA current ratio output method.

(6) This machine can transmit PV, SV, and MV parameters in six forward and reverse directions.

(7) The MODBUS communication of this machine is batch read and write for multiple parameters, and the upper computer can seal the programming process curve, program control start, end, pause, continue, manual/automatic operation, etc. of this machine.

(8) There are two ways to remotely control the startup of this machine: one is to connect the two external terminals and start it through program control; Discontinue use and end program control; The second is to start, end, pause, continue and other operations based on the time of terminal connection, which can be selected by Lu.

(9) Both AL1 and AL2 alarm groups can choose from 1-19 modes.

(10) This machine can be configured with external set SV values; Optional dual output cold cooking control mode.

(11) To solve the problem of the 701 virtual threshold proportional controller losing control of the system due to the large cumulative error between the on-site valve position and the virtual valve position of the instrument (all 701 virtual threshold proportional controllers on the market currently have the problem of possible loss of control of the control system), the instrument will automatically recalibrate in a timely manner to effectively prevent system loss of control.

For example, a control system that operates continuously for a long time

A control system that frequently modifies the set values on a large scale during long-term operation. The 701 virtual valve position proportional machine is equipped with multi-stage process programmable curves, a large temperature range for the process curves, and a long programming running time.

Function Description of Operation Panel

Signal Input/Alarm Mode Selection Table

Disk opening and external dimensions

Wiring diagram (terminal functions are based on the numbering at the back of the machine)

Application Cases