Danfoss VLT 5000 Operating Instructions Manual page 23

Description of choice:
- Save output frequency: Save ('freeze') the output
frequency until communication resumes.
- Stop with auto restart: Stop with automatic restart
on resumption of communication.
- Output frequency = Fixed speed frequency:
Motor runs with fixed speed frequency until
resumption of communication.
- Output frequency = max. frequency: Motor
runs with the maximum frequency until
resumption of communication.
- Stop with trip: Motor has stopped, a reset is
necessary for a restart, see explanation above.
- Control without DeviceNet: Control via DeviceNet
is inactive; control is possible via the terminals
and/or the RS 485 standard interface until
communication resumes.
- Selection parameter setup 4: Parameter setup 4 is
selected in parameter 004; the settings of parameter
setup 4 are used. Parameter 004 is not reset to the
original value upon resumption of communication.
805 Function control word bit 10
(BIT 10 FUNCTION)
Value:
Without function (NO FUNCTION)
Bit 10 = 1 C TW active (BIT 10 = 1
⇒
Bit 10 = 0 C TW active (BIT 10 = 0
⇒
Bit 10 = 0 T imeout (BIT 10 = 0
⇒
Function:
This is sometimes necessary since some masters
set all bits to 0 in different error situations. In these
cases it makes sense to change the function of
bit 10 so that the command to stop (coasting)
goes to the VLT if all bits are 0.
Description of choice:
- Bit 10 = 1 ⇒ CTW active: If bit 10 = 0, the control
word and speed reference value are ignored.
- Bit 10 = 0 CTW active: If bit 10 = 1, the control
⇒
word and speed reference value are ignored. If
all bits of the control word are 0, the VLT will
switch to coasting in response hereto.
- Bit 10 = 0 ⇒ Timeout: If bit 10 = 0, the timeout
function selected in parameter 804 is activated.
- Without function: Bit 10 is ignored, i.e. the control
word and speed reference value are always valid.
= factory setting. () = display text [] = value for use in communication via serial communication port
22
[ 0]
CTW ACTIVE) [1]
⇒
CTW ACTIVE) [2]
⇒
TIMEOUT )
⇒ [3]
®
VLT 5000/ 5000 FLUX/ 6000 HVAC/
8000 AQUA DeviceNet
MG.50.H4.02 - VLT is a registered Danfoss trademark