If a Run command is closed prior to the Drive Enable input being closed, then the drive will not run until the Run command
is cycled. If the Drive Enable input is opened while the drive is running, the drive will stop using the method set by
parameter b1-03 (
Refer to b1-03: Stopping Method Selection on page 105
for details).
Setting 75/76: Up/Down 2
The Up/Down 2 function can be used to add a bias to the frequency reference. The input programmed for 75 will increase
the bias and the input programmed for 76 will decrease it.
Table 5.26
explains how the Up/Down 2 function works
depending on the frequency reference source and parameters d4-01, d5-03 and d4-05.
Refer to d4: Frequency Hold and
Up/Down 2 Function on page 137
for detailed explanations of these and other Up/Down 2 related parameters.
Note: 1.
The Up 2 and Down 2 functions must be set as a pair.
2.
When using the Up/Down 2 function, set appropriate bias limit values in parameters d4-08 and d4-09.
Table 5.26 Up/Down 2 Operations
Condition Freq. Ref.
Source
d4-03
d4-05
d4-01
Operation
Frequency Saved
1
Multi-Step
Speed
Reference
0
0
0
• Accelerates (increases the bias) while the Up 2
function is closed
• Decelerates (decreases the bias) while Down 2
is closed
• Holds output frequency (holds the bias) when
no Up 2 or Down 2 input or both active.
• Resets the bias when the reference changes
• Operates with the frequency reference in all
other situations.
Not saved
2
1
If the bias and frequency reference
are constant for 5 s, the bias is added
to the active frequency reference and
reset afterwards.
3
1
--
• Accelerates (increases the bias) while the Up 2
function is closed,
• Decelerates (decreases the bias) while Down 2
is closed.
• Otherwise operates at the frequency reference
Not saved
4
Multi-Step
Speed
Reference
Value
other
than 0
--
0
• When the Up 2 is enabled, drive accelerates up
to the frequency reference plus d4-03 (bias is
increased for d4-03).
• When Down 2 is enabled, drive decelerates
down to the frequency reference minus d4-03
(bias is decreased for d4-03).
• Holds output frequency (holds the bias) when
no Up 2 or Down 2 input or both active.
• Resets the bias when the reference changes
• Operates with the frequency reference in all
other situations.
Not saved
5
1
If the bias and frequency reference
are constant for 5 s, the bias is added
to the active frequency reference and
reset afterwards.
6
Other (analog
communicati
ons, etc.)
0
0
0
• Accelerates (increases the bias) while the Up 2
function is closed
• Decelerates (decreases the bias) while Down 2
is closed
• Holds output frequency (holds the bias) when
no Up 2 or Down 2 input or both active.
• When during accel/decel. the frequency
reference changes for more than d4-07, bias
value is held until the output frequency meets
the reference (speed agree).
Not saved
7
1
If the bias is constant for 5 s, it is
saved to parameter d4-06. The
frequency reference cannot be
overwritten, so only the bias is saved.
8
Other (analog
communicati
ons, etc.)
0
1
--
• Accelerates (increases the bias) while the Up 2
function is closed,
• Decelerates (decreases the bias) while Down 2
is closed.
• Otherwise operates at the frequency reference
Not saved
9
Value
other
than 0
--
0
• When the Up 2 is enabled, drive accelerates up
to the frequency reference plus d4-03
(increases the bias for d4-03).
• When Down 2 is enabled, drive decelerates
down to the frequency reference minus d4-03
(decreases the bias for d4-03).
• When during accel/decel the frequency
reference changes for more then d4-07, bias
value is held until the output frequency meets
the reference (speed agree).
Not saved
10
1
If the bias is constant for 5 s, it is
saved to parameter d4-06. The
frequency reference cannot be
overwritten, so only the bias is saved.
Setting 7A/7B: KEB Ride-Thru 2 (N.C./N.O.)
A digital input programmed for this function can be used to activate the KEB 2 function and detect power supply return.
Description
Digital Inputs
Setting 7A (N.C.)
Setting 7B (N.O.)
KEB 2 deceleration
Open
Closed
Normal operation
Closed
Open
Refer to Kinetic Energy Backup (KEB) Function on page 189
for details on how to use these input settings.
5.7 H: Terminal Functions
168
SIEP C710606 20 OYMC AC Drive - V1000 User Manual
7/16/2008-13:23