Design And Function; Schematic Diagram; Principle Of Operation - ABB TZIDC Operating Instructions Manual

12 TZIDC DIGITAL POSITIONER | OI/TZIDC-EN REV. B

3 Design and function

Schematic diagram

1 LCI plug
2 Setpoint signal 4 to 20 mA
3 Binary input
4 Binary output
5 Supply air: 1.4 to 6 bar (20 to 90 psi)
6 Exhaust
7 I/P module with 3/3-way valve
Figure 2: Schematic diagram of the positioner
Note
With optional extensions, either the 'Limit value monitor with proximity switches'
microswitches' can be used. In both cases though, the mechanical position indication
m

Principle of operation

The TZIDC is an electronically configurable positioner with communication capabilities designed for mounting on pneumatic linear or
rotary actuators.
Fully automatic determination of the control parameters and adaptation to the positioner allow for considerable time savings as well
as optimum control behavior.
Basic device Optional upgrades
8 Position sensor
9 Plug-in module analog feedback (4 to 20 mA)
0 Plug-in module digital feedback
k Installation kit for mechanical position indication
l Limit value monitor with proximity switches
m Limit value monitor with 24 V-microswitches
or the 'Limit value monitor with 24 V-
l
must be installed.
k