User Switches C1 Submenu
88
Parameter
[Alphanumeric]
Description
Choices
Default
Hidden
item
Run
lockout
ENGLISH
(U3)
METRIC
(U3)
PreTorque
Latch
i,ii
[C134]
(Pre-Torque Latch
i
,ii
)
This parameter determines if the pre-
torque signal is latched.
NOTE: If PreTorque Source has been set
to NONE, the setting does not have any
effect on the operation of the drive.
Some car controllers send both pre-torque
and speed commands. To facilitate this,
the HPV 900 Series 2 has the option of
latching the pre-torque command.
If pre-torque latching is selected using the
Pre-Torque Latch parameter, a FALSE to
TRUE transition on the pre-torque latch
clock latches the value on the pre-torque
channel into the drive. This channel is
allowed to change any time except during
this transition without affecting the value
of the latched pre-torque command.
The Pre-Torque Latch Clock controls
when the pre-torque command is latched.
The Pre-Torque Latch clock parameter
(PTorq LATCH CLCK) determines the
source of this latch control. The two
choices for latch control are the serial
channel or a logi
c i
nput (EXTERNAL TB).
The speed regulator uses the latched pre-
torque command when the internal Speed
Regulator Release signal is asserted.
Once the pre-torque command is used the
latch and the
pre-torque
command is
cleared.
not latched
i
,ii
[0]
latched
i
,ii
[1]
NOT LATCHED
i,ii
Y
i
,ii
Y
i
,ii
PTorq Latch
Clck
i,ii
[C135]
(Pre-Torque Latch Clock
i
,ii
)
If the PRE-TORQUE LATCH has been set
to LATCHED, then this parameter
chooses the source for latch control. If set
to EXTERNAL TB, the Pre-Trq Latch
signal on TB1 must be selected.
external tb
i
,ii
[1]
serial
i
,ii
[2]
EXTERNAL TB
i,ii
Y
i
,ii
Y
i
,ii
i
Parameter accessible through
CLOSED LOOP (U9)
Operation
ii
Parameter accessibly through
PM (U9)
Operation
iii
Parameter accessible through
OPEN LOOP(U9)
Operation
