VMX
2
Series Digital Solid State Soft Starter User Manual
42 |
P a g e
5.6.3 Jog Mode
The Jog Function is another user optional feature and is controlled by
closing the input on TB1 Terminals 6 and 7. If this input is left open, the
VMX2 Series
will ignore all Jog settings. Engaging the Jog feature
along with the Start / Run Command provides an output from the SCRs,
but will not continue ramping to full acceleration. This feature can Jog
the motor at either a preset Voltage (
F019 & F020
) or a preset Current
(
F021
), depending upon the settings of the Ramp Type from
F010
, and
can be initiated along with Ramp 1 or Ramp 2 (see Dual Ramp Select,
Section 4.2.5 and 5.6.2.a). It is also sometimes useful to use Jog in
combination with Ramp 2, see section 4.2.5.c.
Note: Jog functions may become disabled by COM port function F068 setting 3.
See section 5.6.10 for details.
Ramp 1 (Dual Ramp Input
Open)
Ramp 2 (Dual Ramp Input
Closed)
Setting
from
F010
Ramp &
Jog
Type
Initial
Torque
from…
Jog
Torque
from…
Ramp &
Jog
Type
Initial
Torque
from…
Jog
Torque
from…
1
Voltage
F011
F019
Voltage
F015
F019
2
Current
F012
F021
Current
F016
F021
3
Voltage
F011
F019
Current
F016
F021
4
Current
F012
F021
Voltage
F015
F019
Table 5.6.3: Jog Settings
Caution:
Although the Thermal Register tracks all motor current use,
continuous usage of the Jog feature risks thermal motor damage
or nuisance tripping.
F019 = Voltage Jog
Factory Setting = 50%
Range = 5 - 100%
Sets the voltage level of the Jog feature and is typically used to
check rotation, alignment, or to slowly move a load into position.
Jogging at a set voltage has no current control so the duration
of the applied voltage must be limited to prevent excessive
motor heating.
F020 = Time of Voltage Jog
Factory Setting = 10 seconds
Range = 1 - 20 seconds
Set to minimize motor heating during a voltage jog. This setting
is the
maximum
allowable time for jogging the motor using
voltage only.
F021 = Current Jog
Factory Setting = 150%
Range = 100 - 500%
Sets output of a current Jog. The current jog feature is typically
used to check rotation, alignment, or slowly move a load into
position. This is not time-limited but should be used cautiously.
Note:
Jog terminals are defaulted as
“External Lockout, Normally Closed”, see
parameter F113 for other options.
Jog Voltage
Setting
Voltage Ramp
V
o
lt
a
g
e
Time
Figure 5.6.3.1:
Voltage Jog and Jog Time
New Start
Command
M ax.
Jog
Time
Jog
Command
Jog Current
Setting
Current Ramp
C
u
rr
e
n
t
Time
Figure 5.6.3.2:
Curre nt Jog
New Start
Command
Jog
Command
