PID controller ZET 7190-R

  • 2 control modes: PID controller/«Repeater»
  • Used for stepper motor control
  • CAN 2.0 data transfer interface
  • Output voltage 0…5 V

ZET 7190-R — PID controller on CAN bus. It is used in automated systems for control signal forming.

From 267 USD

* Minimum order value: from 7 700 USD

Specifications

of PID controller ZET 7190-R

Technical specifications
Number of channels 2
Control algorithm PID controller (proportional-integral-derivative control)
Output voltage 0…5 V
Maximum channel input current 10 mA
Data transfer interface CAN 2.0
Operational specifications
Dimensions 65×34×14 mm
Weight 35 g
Device power from 9 up to 24 V
Consumed power 1,5 W
Operational temperature range from -40 up to +100 °C
  • Available product versions

    Standard: laboratory version, plastic package (green color).
    OEM: compound coating.
    Industrial*: standard module placed inside of a leak-proof package
    (transparent lid).
    *Option

Measuring network connection and control scheme diagram

of PID controller ZET 7190-R

Settings adjustment of ZET 7190-R PID controller can be performed by connecting it to PC using interface converter via “Device manager”.

Connections designation for required signal generation

Marking Labelling Function
1 OUT1 Generator channel 1
2 OUT2 Generator channel 2
3 +2,5 V Base level
4 GND General

Connectors pins designation for connection to CAN line

Contact Function Marking
1 +(9…24) V Orange
2 CAN 2.0 line «H» Blue
3 CAN 2.0 line «L» White-blue
4 GND White-orange
Inphase connection of the output channel to ground

Cophasal output channel connection in relation to the “gnd”

The differential connection of the output channels 2.5 V

Differential output channels connection 

in relation to base signal 2,5 V

Configuration of ZET 7190-R PID controller

"PID" tab

Tab pid

Parameter Adjustable? Acceptable values Description
Activation Yes PID on/off If PID mode is activated, repeater mode will be switched-off automatically
PID cycle frequency Yes 10
50
100
200
500
DAC frequency of data transfer to module output
Proportional gain Yes PID controller ratios
Integral ratio Yes
Differential ratio Yes
Max. value Yes Setting of DAC output value limitation
Min. value Yes
Displacement DAC1-DAC2 Yes Setting displacement value of  DAC2 in relation to DAC1
DAC2 output in relation to DAC1 Yes Displacement
Inversion
If “Displacement” mode is selected, displacement value will be taken from “Displacement DAC1-DAC2” parameter.
If inversion mode is selected, DAC2 will have inverted from 2,5 V signal of DAC1.
Fedback node number Yes 2-63 CAN network module address for feedback communication
Control node number Yes 2-63 CAN network module address for reference signal
Channel 1 data flow Yes Output 1
P
I
D
Selection of module signal data displayed by ZETLAB Software. Output1 – output voltage, P,I,D – PID controller ratios
Channel 2 data flow Yes Output 2
P
I
D
The same as for the parameter «Channel 1 data flow»

"Repeater" tab

Repeater tab

Parameter Adjustable? Acceptable values Description
Activation Yes PID on/off Repeater mode on/off. If repeater mode is activated, PID mode is disabled automatically
Repeater cycle frequency Yes 50
100
500
1000
2000
DAC frequency of data transfer to module output (irrelevant of input data)
Input 1 node number Yes 2-63 CAN network node number (to be used as signal source)
Input 2 node number Yes 2-63 The same as for the parameter «Input 1 node number»
Input 1 max value Yes Maximum value accepted by signal source. This value will be transferred to 5V physical signal at the output
Input 2 max value Yes Minimum value accepted by signal source. This value will be transferred to 0V physical signal at the output
Input 2 max value Yes The same same as for the parameter «Input 1 max value»
Input 2 min value Yes The same same as for the parameter «Input 1 min value»

"PID adjustment" tab

PID adjustment

Parameter Adjustable? Description
Required value Yes Signal reference value
Proportional ratio Yes PID controller ratios
Integral ratio Yes
Differential ratio Yes
DAC1-DAC2 displacement Yes Setting displacement value of DAC2 in relation to DAC1

PID controller mode: configuration example

There are two tabs for configuration of the module in PID controller mode: “PID” and “PID adjustment”. “PID adjustment” tab serves for selecting adjustment ratios. The parameters set in this tab are applied upon “Save” key activation, however, these parameters are not saved in the non-volatile memory.

For changing the module settings, enable PID controller mode in “PID” tab, set PID frequency, max and min value, DAC2 output operation mode, feedback communication node number, reference node number, displayed data flow types for Output 1 and 2. Then enter the tab “PID adjustment”, select corresponding ratios depending on your task. After that copy the selected ratios from “PID adjustment” tab to “PID” tab.

Signal repeater mode: configuration

As the “Repeater” mode is activated, the module forwards a signal (obtained by means of linear conversion of the digitized signal from the digital module, node of which corresponds to that selected in ZET7190-R module) to analog outputs. Source digital signal in the range «max input X value» – «min input X value» is transformed into output signal in the range (0-5) V.

In the repeater mode ZET7190-R can be used off-line without connection to PC. In the case if the CAN network has a device with a set node number, ZET7190-R will use it and will form an output signal based on the data received.

In the “Repeater” mode the module can be used as a transmitter for “4-20 mA” interface. Input voltage range (0-5) V forms limitation for current loop operation mode 4-20 mA – current loop impedance max value is limited by 240 Ohm.

For changing module settings in the current output module one should:

1) calculate output voltage range
Ur_min = R*0,004,
Ur_max = R*0,02,
where R – is the current loop impedance.

2) calculate ratios depending on the input values range
k = ∆Ur/∆Uin,
where ∆Ur = Ur_max-Ur_min, ∆Uin – repeated values range
b = Ur_min-k* Uin_min

3) calculate ratios to be recorded in the sensor settings
min input value = -b/k
max imput value = (5-b)/k

Example. Settings of  ZET7190-R module in signal repeater mode from  ZET7112 for connection via current loop interface 4…20 mA to ZET7180-I.
R = 120 Ohm
Ur_min = 120*0,004 = 0,48
Ur_max = 120*0,02 = 2,4
∆Ur = 1,96, ∆Ur-in = 16 (mPa)
k = 0,12; b = 0,48
Min input value = -4
Max input value = 37,6667

Basic configuration

of PID controller ZET 7190-R

Standard equipment

Basic delivery scope includes:

  • PID controller ZET 7190-R;
  • DIN-rail mounting panel for plastic modules 71×39;
  • set of operational documentation.

Necessary measuring products

supplied upon request

ZET 7174
ZET 7174
USB Connection 

ZET 7176
ZET 7176
Ethernet Connection


Industrial product version
Protection from moist and dust

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