Danfoss VLT 6000 HVAC Series

203 Reference site
(REFERENCE SITE)
Value:
Hand/Auto linked reference
(LINKED TO HAND/AUTO) [0]
Remote reference (REMOTE) [1]
Local reference (LOCAL) [2]
Function:
This parameter determines the location of the active
reference. If Hand/Auto linked reference [0] is selected,
the resulting reference will depend on whether the fre-
quency converter is in Hand or Auto mode.
The table shows which references are active when
Hand/Auto linked reference [0], Remote reference [1]
or Local reference [2] has been selected. The Hand
mode or Auto mode can be selected via the control
keys or via a digital input, parameters 300-307 Digital
inputs.
Reference
handling Hand mode Auto mode
Hand/Auto [0] Local ref. active Remote ref. active
Remote [1] Remote ref. active Remote ref. active
Local [2] Local ref. active Local ref. active
Description of choice:
If Hand/Auto linked reference [0] is chosen, the motor
speed in Hand mode will be decided by the local ref-
erence, while in Auto mode it depends on remote
references and any setpoints selected.
If Remote reference [1] is selected, the motor speed will
depend on remote references, regardless of whether
Hand mode or Auto mode has been chosen.
If Local reference [2] is selected, the motor speed will
only depend on the local reference set via the control
panel, regardless of whether Hand mode or Auto mode
has been selected.
204
Minimum reference, Ref
MIN
(MIN. REFERENCE)
Value:
Parameter 100 Configuration = Open
loop [0].
0.000 - parameter 205 Ref
MAX
0.000 Hz
Parameter 100 Configuration = Closed
loop [1].
-Par. 413 Minimum feedback
- par. 205 Ref
MAX
0.000
Function:
The Minimum reference gives the minimum value that
can be assumed by the sum of all references. If Closed
loop has been selected in parameter 100 Configura-
tion, the minimum reference is limited by parameter
413 Minimum feedback.
Minimum reference is ignored when the local refer-
ence is active (parameter 203 Reference site). The unit
for the reference can be seen from the following table:
Unit
Par. 100 Configuration = Open loop
Hz
Par. 100 Configuration = Closed loop
Par. 415
Description of choice:
Minimum reference is set if the motor is to run at a
minimum speed, regardless of whether the resulting
reference is 0.
205
Maximum reference, Ref
MAX
(MAX. REFERENCE)
Value:
Parameter 100 Configuration = Open
loop [0]
Parameter 204 Ref
MIN
- 1000.000
Hz
50.000 Hz
Parameter 100 Configuration =
Closed loop [1]
Par. 204 Ref
MIN
- par. 414 Maximum feedback 50.000 Hz
Function:
The Maximum reference gives the maximum value that
can be assumed by the sum of all references. If Closed
loop [1] has been selected in parameter 100 Config-
uration, the maximum reference cannot be set above
parameter 414 Maximum feedback . The Maximum ref-
erence is ignored when the local reference is active
(parameter 203 Reference site ).
The reference unit can be determined on the basis of
the following table:
Unit
Par. 100 Configuration = Open loop
Hz
Par. 100 Configuration = Closed loop
Par. 415
Description of choice:
Maximum reference is set if the motor speed is not to
exceed the set value, regardless of whether the re-
sulting reference is higher than Maximum reference.
VLT
®
6000 HVAC Series
= factory setting, () = display text, [] = value for use in communication via serial communication port
MG.61.B5.02 - VLT
®
is a registered Danfoss trademark 117
Programming