Burkert Type 8611 - Manual (Page 10)

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SystemDescription
5. sysTeM descripTiOn
5.1. general description
The process controller Type 8611 is designed for integration in a closed control circuit and can be used for
numerous control tasks in fluid technology. The figure below illustrates the integration of the controller in a closed
control circuit.
controller 8611
controlled system
Set-point SP
(set-point value) Manipulated
variable MV
Controlled
variable
+
_
X
Actuating
element
Sensor Process
Feedback process actual value (PV)
Figure 1: Block diagram of a closed control circuit
5.1.1. interfaces of the process controller Type 8611
Depending on the controlled system and process, different controller structures and different inputs/outputs are
available for measuring the process actual value and for controlling the actuating elements. The diagram below
shows the available interfaces of the process controller.
24 / 5 V DC
electrical power supply
for sensors
Sensor inputs
4 - 20 mA / 0 - 10 V,
frequency, Pt 100
Supply 24 V DC
Binary input 0-30 V DC
Process
controller
eCONTROL
Type 8611
Inputs
Inter- faces
Supply
Operation
Ext. set-point value default
or ratio
4 - 20 mA / 0 - 10 V
Analog output
4 - 20 mA / 0 - 10 V
Transistor outputs
PWM, 2P – T, 3P – T
Process value output
4 - 20 mA / 0 - 10 V
Binary output 0 / 24 V
(NC / NO)
RS485
option, for control
cabinet model only
Outputs
Figure 2: Interfaces of the process controller Type 8611
english
Type 8611