YASKAWA FSDrive-MV1000 Parameter Manual page 172

2.7 H: Terminal Functions
Setting 1E: Reference sample hold
This function allows the user to sample an analog frequency reference signal being input to analog input 1 or analog
input 2 and hold the frequency reference at the sampled level. Once the Analog Frequency Reference Sample/Hold
function is held for at least 100 ms, the drive reads the analog input and changes the frequency reference to the newly
sampled speed as illustrated in
When the power is shut off and the sampled analog frequency reference is cleared, the frequency reference is reset to 0.
Figure 2.48
common_TMonly
An oPE03 error will occur when one of the following functions is used simultaneously with the Analog frequency
reference sample/hold command.
• Hold accel/decel stop (setting: A)
• Up command, Down command (setting: 10, 11)
• Offset frequency (setting: 44 to 46)
• Up or Down functions (setting: 75, 76)
Setting 20 to 2F: External fault
By using the External fault command, fault contact outputs can be triggered when problems occur with external devices.
To use the External fault command, set one of the contact inputs to any value between 20 to 2F. The digital operator will
display EF where is the number of the terminal to which the external fault signal is assigned.
For example, if an external fault signal is input to contact input 3, "EF3" will be displayed.
Select the value to be set in H1-
• Signal input level from peripheral devices (N.O., N.C.)
• External fault detection method
• Operation after external fault detection
Table 2.22 shows the relationship between the conditions and the value set for H1-
Terminal Status
Setting
N.O. N.C.
20
21
22
23
24
25
26
27
28
29
2A
2B
2C
2D
172
Figure 2.48.
Referenece
Sample Hold Input
Figure 2.48 Analog Frequency Reference Sample/Hold
from a combination of any of the following three conditions:
Table 2.22 Stopping Method for External Fault
Detection Conditions
<1>
Detected
Always
during Run
Detected
only
OFF
ON
100 ms 100 ms
<2>
Ramp to
Coast to Stop
Stop
(fault)
(fault)
YASKAWA ELECTRIC EZZ010930 FSDrive-MV1000 Parameter Guide
Frequency
reference
Time
:
Stopping Method
Fast Stop
(fault)
Alarm Only
(continue
running)