Starter Work
CVRF-SVN005C-EN 39
• To simplify future chiller trouble analysis, Trane
recommends removing all existing, non-essential
components from the starter panel enclosure.
AFD Sub-Panel
The Symbio™ starter module is provided on an assembled
sub-panel that is a direct replacement for a UCP2 starter
module mounted on an AFD. The panel contains the analog
output, binary input and timer required to run the AFD as a non-
communicating Symbio™ drive.
Installation steps are as follows:
1. Remove existing UCP2 module keeping medium voltage
and
AFD potential transformers and CTs for reuse.
2. Install new sub-panel in place of existing UCP2 starter
modul
e and existing potential transformers on the bracket.
3. Wire AFD control interfa
ce per schematic.
4. Power and communications.
a. For unit mount AFDs
i. Wire per schematic
ii. Use global connector to provide power and
commu
nications to starter module.
b. For remote mount AFDs
i. Wire per schematic, starter module will be powered
by su
b-panel power supply.
ii. Use existing communications cable to connect
Sy
mbio™ communications bus to starter module.
5. Shunt trip output (Optional) -
The UCP2 starter module
shunt trip function is not documented by the Symbio™ AFD
schematic. It is not used on UCP2 AFDH and is not
required for a Symbio™ upgrade.
Figure 54. AFD sub panel customer connections 5071-1536
If keeping shunt trip control is desired, a Symbio™
programmable binary output can be setup to transition upon
starter fault. Wire the output normally open contact with 115
Vac to the AFD circuit breaker in order to initiate shunt trip.
Notes:
• Be sure to
refer to the wiring diagrams listed in “Wiring
Diagram Matrix,” p. 46 as you review the following
instructions. The wire numbers and component
designations indicated in these steps appear in these
figures. Actual existing numbers may vary for your unit.
Service literature that includes sample original unit wiring
can be found in CVHE-M-7 or CVHE-IN-8.
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