Metacentre VSD-R 4-20mA Box
Page 9
3.7 VSD-R Box Status (C>):
The VSD-R Box User menu ‘Status’ display
item (C>) continuously shows the network
address and the VSD-R Box status block
number.
For Example:
Network Address = 1
(Compressor 1)
State Block No. = 4
(Compressor Ready)
The ‘status block number’ enables VSD-R Box
operational status to be established from the
status block diagram:-
Compressor
RUNNING
Offload
Initialise
9
Compressor
Running
ON LOAD
10
Compressor
READY
4
2
VSD-R Box
Fault State
1
Power On
Compressor
NOT READY
3
Ready + Running = True
AND
Loaded = True
Loaded
= False
Ready
= False
Ready = True
AND
Load Request = True
Load Request
= False
Ready
= True
No Fault
VSD Panel
Fault or
VSD-R Box
Fault
Initialisation
Complete
Waiting For
Run
Request
5
Run Request
= False
RUNNING
Run Request
= False
READY
Ready
= False
Ready
= False
No Response
compressor
NOT READY
6
Run Request
time-out
Ready = False
OR
RESET Pressed
Contactor ON
Waiting For
C.Feedback
7
Ready
= False
Ready
= False
Ready = True
AND
Run Request = True
AND
Load Request = True
Ready = True
AND
Run Request = True
AND
C.Feedback = True
ON LOAD
Run
Request
= False
Ready = True
AND
Run Request = True
AND
Running = True
Motor Start
'Acceleration'
8
Ready
= False
Run
Request
= False
Ready = True
AND
Run Request = True
AND
Load Request = True
AND
C.Feedback = True
