ABB TZIDC-210, Operating Instructions Manual

Page: 40 / 68

40 TZIDC-210, TZIDC-220 DIGITAL POSITIONER | OI/TZIDC-210/TZIDC-220-EN REV. G
… 6 Installation
… Mechanical mounting
Figure 11: Mounting lever and bracket on the positioner
1. Attach the lever
6
to the feedback shaft
5
of the
positioner (can only be mounted in one position due to the
cut shape of the feedback shaft).
2. Using the arrow marks
4
, check whether the lever moves
within the operating range (between the arrows).
3. Hand-tighten the screw
7
on the lever.
4. Hold the prepared positioner with the mount bracket
1
still
loose on the actuator so that the follower pin for the lever
enters the follower guide to determine which tap holes on
the positioner must be used for the mount bracket.
5. Secure the mount bracket
1
with screws
2
and washers
3
using the relevant tap holes on the positioner housing.
Tighten the screws as evenly as possible to ensure
subsequent linearity. Align the mount bracket in the oblong
hole to ensure that the operating range is symmetrical (lever
moves between the arrow marks
4
).
Figure 12: Mounting on a cast iron yoke
1. Attach the mount bracket
2
with screw
4
and washer
3
to the cast iron yoke
1
.
or
Figure 6: Mounting on a columnar yoke
1. Hold the mount bracket
3
in the proper position on the
columnar yoke
2
.
2. Insert the U-bolts
1
from the inside of the columnar yoke
2
through the holes of the mount bracket.
3. Add the washers
4
and nuts
5
.
4. Tighten the nuts so that they are hand-tight.
Note
Adjust the height of the positioner on the cast iron yoke or
columnar yoke until the lever is horizontal (based on a visual
check) at half stroke of the valve.