Trane TR170 - Page 94

24-00 FM Function
Option: Function:
[4] Enabled-
Run
Fwd/Rev
In this mode, the motor operates in a clockwise
direction. When receiving a reversing signal, the
motor operates in counterclockwise direction. If
parameter 24-01 Fire Mode Conguration is set
to [3] Closed Loop, the motor cannot operate in
counterclockwise direction.
24-01 Fire Mode Conguration
Select to use closed-loop or open-loop operations.
Option: Function:
[0] * Open Loop
[3] Closed Loop
NOTICE
When set to [3] Closed Loop, the
commands Reversing and Start
Reversing do not reverse the direction
of the motor.
Motor speed is determined by a reference
from the built-in PI controller varying the
motor speed as of a closed-loop control
process (for example constant pressure or
ow). Congure the PI controller in parameter
group 20-8* PI Basic Setting and parameter
group 20-9* PI Controller.
24-05 FM Preset Reference
Range: Function:
0 % * [-100 - 100 %] Enter the required preset reference/
setpoint as a percentage of the re mode
maximum reference set in Hz.
24-06 Fire Mode Reference Source
Option: Function:
[0] * No function
[1] Analog Input 53
[2] Analog Input 54
[7] Pulse input 29
24-07 Fire Mode Feedback Source
This parameter denes which input on the frequency converter
should be treated as the source of the feedback signal.
Option: Function:
[0] * No function
[1] Analog Input 53
[2] Analog Input 54
[3] Pulse input 29
[100] Bus Feedback 1
[101] Bus Feedback 2
24-09 Fire Mode Alarm Handling
Option: Function:
[0] Trip+Reset,
Critical
Alarms
If this mode is selected, the frequency
converter continues to run, ignoring most
alarms, even if doing so may damage the
frequency converter. Critical alarms are
alarms that cannot be suppressed but a
restart attempt is possible (innity automatic
reset).
[1]
* Trip, Critical
Alarms
In case of a critical alarm, the frequency
converter trips and does not auto-restart
(manual reset).
[2] Trip, All
Alarms/Test
It is possible to test the operation of re
mode, but all alarm states are activated
normally (manual reset).
NOTICE
Certain alarms can aect the lifetime of the frequency
converter. If 1 of these ignored alarms occurs while in
re mode, a log of the event is stored in the re mode
log.
In re mode log, the 10 latest events of alarms that
aect warranty, re mode activation, and re mode
deactivation are stored.
NOTICE
The setting in parameter 14-20 Reset Mode is disregarded
if re mode is active (see parameter group 24-0* Fire
Mode).
Num
ber
Description
Critical
alarms
Warranty
aecting
alarms
4Mains ph. Loss x
7DC over volt xx
9 Inverter overloaded x
13 Overcurrent x x
14 Ground fault x x
16 Short circuit x x
38 Internal fault x
69 Power card temp x
Table 3.14 Fire Mode Alarm Handling
3.16.2 24-1* Drive Bypass
If a
re
mode coast occurs (see parameter 24-00 FM
Function), the frequency converter includes a feature that
can automatically activate an external electro-mechanical
bypass.
The bypass switches the motor to operation directly on
line. One of the digital outputs or relays in the frequency
converter activates the external bypass, when programmed
Parameters Programming Guide
BAS-SVP16B-EN 02/2017 All rights reserved. 93
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