ABB DI426 Redundant channel module

The control electronics is set-up as printed circuit board in Europe format 100 x 160 mm, fitted on both sides. It comprises a switching power supply unit [1] creating all internally required voltages. The central unit is a microcontroller controlling the entire process and realizing the controller functions. Data for configuration, command values and parameters are stored in a FLASH in a non-volatile form. Four binarily coded digital inputs are used to call up parameter sets (command values) from the memory in which you can store a maximum of 16 sets. A call-up activates a command value for the swivel angle, the pressure and the power limitation as well as ramp times for swivel angle and pressure.

Via the differential inputs AI7, AI5 and AI4 [3]

 the analog command values for the swivel angle, the pressure and the maximum power are specified. With a positive swivel angle command value, the pump swivels in "counterclockwise" swivel direction (= flow direction P → B). The digital callup command values are added to the analog command values; the total of both command values is supplied to the controller input via the relevant ramp generators. The controller output signal controls the output stage [6] depending on the command/actual value differences. The position of the valve control spool [11], the swivel angle of the variable displacement pump [12a, 12b or 12c] and the system pressure [13] are measured and supplied to the control loop via evaluation electronics [7]

For the pressure control

 diff erent modes are provided: Depending on the configuration, the pressure controller works with one or two pressure sensors. ▶ Open circuit: 1 sensor, optionally current or voltage ▶ Closed circuit: 2 sensors, optionally current or voltage In the closed circuit, both pressure sensors are evaluated. As soon as the control electronics is in pressure control, the larger of the two pressures determines the control behavior. To compensate control deviations (pressure command value-actual pressure value), the pressure controller can also swivel the pump to the opposite side as well as beyond its specified swivel angle command value

Company introduction

Temporal Ming sheng automation equipment co., LTD. Was established in April 02, 2021, registered jiujiang ruichang city in jiangxi province, east yi road no. 23 lake farmers 401 mall, the legal representative person Zhou Zuochen.

[Main Products]

Main products: PLC and DCS system spare parts modules of world famous brands

①Allen-Bradley 1756、1746、1747、1771、1785

②Schneider 140 Series PLC module

③General electric GE

IC693 IC697 IC698 Series PLC module

DS200 DS3800 DS215 IS200 IS215 IS220 Series gas turbine module

VMIVME Control module of series

④Bently：3500 series cards 3500/22M、3500/15、3500/92 And other products

⑤ICS TRIPLEX

⑥ABB Robots. FANUC Robots、YASKAWA Robots、KUKA Robots、Mitsubishi Robots、OTC Robots、Panasonic Robots、MOTOMAN Robots。

⑦EMERSON：Spare parts for OVATION system, WDPF system and MAX1000 system.

⑧ Invensys Foxboro: I/A Series system, FBM (field input/output module) sequential control, ladder logic control, accident recall processing, digital analog conversion, input/output signal processing, data communication and processing, etc. Invensys Triconex: redundant fault-tolerant control system, Zui modern fault-tolerant controller based on triple module redundancy (TMR) structure.

⑨Woodward：505 series governor 9907-164 And other products

⑩Bosch Rexroth：Indramat，I/O module,PLC CPU,Motors, drives and other products. 

◆Motorola：MVME 162、MVME 167、MVME1772、MVME177and other products.