Trane TR200 - Page 82

3-9* Digital Pot.Meter
The digital potentiometer function allows the user to increase or decrease the actual reference by adjusting the
set-up of the digital inputs using the functions INCREASE, DECREASE or CLEAR. To activate the function, at
least one digital input must be set up to INCREASE or DECREASE.
3-90 Step Size
Range: Function:
0.10 %* [0.01 - 200.00 %]
3-91 Ramp Time
Range: Function:
1.00 s [0.00 - 3600.00 s] Enter the ramp time, i.e., the time for adjustment of the reference from
0% to 100% of the specified digital potentiometer function (INCREASE,
DECREASE or CLEAR).
If INCREASE / DECREASE is activated for longer than the ramp delay
period specified in par.3-95
Ramp Delay, the actual reference will be
ramped up / down according to this ramp time. The ramp time is defined
as the time used to adjust the reference by the step size specified in par.
3-90
Step Size.
3-92 Power Restore
Option: Function:
[0] * Off Resets the Digital Potentiometer reference to 0% after power-up.
[1] On Restores the most recent Digital Potentiometer reference at power-up.
3-93 Maximum Limit
Range: Function:
100 %* [-200 - 200 %] Set the maximum permissible value for the resultant reference. This is
advisable if the Digital Potentiometer is used for fine tuning of the re-
sulting reference.
3-94 Minimum Limit
Range: Function:
0 %* [-200 - 200 %] Set the minimum permissible value for the resultant reference. This is
advisable if the Digital Potentiometer is used for fine tuning of the re-
sulting reference.
3-95 Ramp Delay
Range: Function:
Applica-
tion de-
pend-
ent*
[Application dependant]
Parameter Description
TR200 Programming Guide 4-45