TM 5-3895-374-24-1
Serial link
List of ATV-45 2
Definition of the bits
variables
BIT
NAME
DESCRIPTION
BO
TST
Tripping of safety relay
B1
RST’
Resetting of speed controller
B2
CLO’
Assigning of LOCAL commands
B3
CLI’
Assigning of LINE commands
84
NTO
Cancellation of communication control
Commands (read and write)
B5
RUN
Run / stop command
B6
REV
Frequency reference sign
B7
DCB
DC braking command
88
CAL
Freewheel stop command
B9
CAR
Fast stop command
B10
RTM
Motor voltage reduction command
* These bits cause the action given when written at 1 They are reset to zero by the speed
controller Writing them at 0 has, therefore, no effect and they will always read 0.
TST (BO)
Causes the ATV-45 2’s safety relay to open, and as a result, the switching off of the
controller, If the relay contact Is used to maintain the line contractor.
RST (B1)
Causes fault acceptance and resetting of the ATV-45 2 safety relay only If the fault could
be corrected and has disappeared.
CLO (B2)
Puts the ATV-45 2 in LOCAL mode, this can only be controlled from Its terminal (logic and
analogue inputs).
CLI (B3)
Puts the ATV-45 2 in LINE, this waits for its commands from the serial link.
NTO (84)
When the speed controller is In LINE mode exchange monitoring is carried out
permanently, If the ATV 45 2 does not receive at least one character every second, the
SLF fault will appear.
The setting to state 1 of bit B4 cancels this control This possibility is reserved for fine
adjustment phases and Is not recommended during operation for safety reasons.
RUN (B5)
1 = run, 0 = stop.
REV (B6)
Frequency reference signal 0 = positive, 1 = negative.
Reversing the rotation direction can be achieved by changing the bit state. or by supplying
an opposite frequency reference sign in word W19.
DCB (B7)
Brake control by positioning the bit at 1 Has priority over RUN bit.
CAL (B8)
Freewheel stop control as soon as the bit Is set to 1 Has priority over RUN bit.
CAR (B9)
Fast stop control (deceleration ramp divided by 4) Has priority over RUN and CAL bit.
(page 3-268)
