Trane TR150 - Guided Set-up Wizard

2.3.2 Output Signals
The frequency converter also produces output signals that
are carried either through the RS485 serial bus or terminal
42. Output terminal 42 operates in the same manner as
the inputs. The terminal can be programmed for either a
variable analog signal in mA or a digital signal (0 or 1) in
24 V DC. In addition, a pulse reference can be provided on
terminals 27 and 29. Output analog signals generally
indicate the frequency, current, torque, and so on, to an
external controller or system. Digital outputs can be
control signals used to open or close a damper, or send a
start or stop command to auxiliary equipment.
Additional terminals are Form C relay outputs on terminals
01, 02, and 03, and terminals 04, 05, and 06.
Terminals 12 and 13 provide 24 V DC low voltage power,
often used to supply power to the digital input terminals
(18–33). Those terminals must be supplied with power
from either terminal 12 or 13, or from a customer supplied
external 24 V DC power source. Improperly connected
control wiring is a common service issue for a motor not
operating or the frequency converter not responding to a
remote input.
Number of digital outputs 2
Terminal number
42, 45
1)
Voltage level at digital output 17 V
Maximum output current at digital
output
20 mA
Maximum load at digital output
1 k
Ω
Table 2.1 Digital Output
1) Terminals 42 and 45 can also be programmed as analog output.
2.4 Service Functions
Service information for the frequency converter can be
shown in display lines 1 and 2. 24 dierent items can be
accessed. Included in the data are
•
Counters that tabulate hours run, and so on.
•
Fault logs that store frequency converter status
values present at the ten most recent events that
stopped the frequency converter
•
Frequency converter nameplate data
Parameter 14-28 Production Settings and
parameter 14-29 Service Code, are the relevant service
parameters.
Parameter settings are shown by pressing [Main Menu].
Press [
▲
], [
▼
], [►] and [◄] to scroll through parameters.
See the Quick Guide for detailed information on accessing
and showing parameters, and for descriptions and
procedures for service information available in parameter
group 6-** Analog In/Out.
2.5 Control Terminals
For proper function of the frequency converter functioning,
the input control terminals must be:
•
Wired properly.
•
Powered.
•
Programmed correctly for the intended function.
Ensure that the input terminal is wired correctly:
1. Conrm that the control and power sources are
wired to the terminal.
2. Check the signal in either of 2 ways:
•
Press [Display Mode], then select Digital
Input. The LCP shows the digital inputs
which are correctly wired.
•
Use a voltmeter to check for voltage at
the control terminal.
Conrm that each control terminal is programmed for the
correct function. Each terminal has specic functions and a
numbered parameter associated with it. The setting
selected in the parameter enables the function of the
terminal.
See the Quick Guide for details on changing parameters
and the functions available for each control terminal.
Frequency Converter Control TR150 and TR170 Service Manual
BAS-SVM04B-EN 02/2017 All rights reserved. 19
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