Danfoss VLT Instruction Manual page 79

VLT ® HVAC Drive Instruction Manual
0-72 Time Format
Option:
[0] * 24 h
[1] 12 h
0-74 DST/Summertime
Option:
[0] * OFF
[2] Manual
0-76 DST/Summertime Start
Range:
0 N/A* [0 - 0 N/A]
0-77 DST/Summertime End
Range:
0 N/A* [0 - 0 N/A]
1-00 Configuration Mode
Option:
[0] * Open-loop
[3] Closed-loop
NOTE!
This parameter cannot be changed when the motor is running.
NOTE!
When set for closed-loop, the commands reversing and start reversing will not reverse the direction of the motor.
Function:
Sets the time format to be used in the LCP.
Function:
Choose how Daylight Saving Time/Summertime should be handled. For manual DST/Summertime
enter the start date and end date in par.0-76
End
.
Function:
Sets the date and time when summertime/DST starts. The date is programmed in the format se-
Date Format
lected in par.0-71 .
Function:
Sets the date and time when summertime/DST ends. The date is programmed in the format selected
Date Format
in par.0-71 .
Function:
Motor speed is determined by applying a speed reference or by setting desired speed when in hand
mode.
Open-loop is also used if the adjustable frequency drive is part of a closed-loop control system based
on an external PID controller providing a speed reference signal as output.
Motor speed will be determined by a reference from the built-in PID controller varying the motor
speed as part of a closed-loop control process (e.g., constant pressure or flow). The PID controller
must be configured in par. 20-** or via the function set-ups accessed by pressing the [Quick Menu]
button.
MG.11.A9.22 - VLT ® is a registered Danfoss trademark
6 How to program the adjustable frequency
DST/Summertime Start and par.0-77
drive
DST/Summertime
6
6-21