2.4 d: Reference Settings
YASKAWA ELECTRIC
TOEP C710687 03B FSDrive-MV1000 Parameter Guide
151
When using analog inputs, negative input values can be generated by:
• applying negative voltage input signals.
• using positive analog input signals but setting the analog input bias to negative values so that the input value can be
negative.
• applying positive voltage input signals and using a contact input that is programmed for H1-
= 78.
When using MEMOBUS/Modbus communication or a communication option card, only positive input values can be set.
■
Speed Limitation and Speed Limit Bias
The speed limit setting is read from the input selected in parameter d5-03. A bias can be added to this speed limit using
parameter d5-05 while parameter b5-08 determines how the speed limit bias is applied.
between these settings.
Table 2.18 Speed Limit, Speed Bias and Speed Limit Polarity Selection
■
Indicating Operation at the Speed Limit
Program a digital output to close when the drives operates at or beyond the speed limit (H2-
= 32). Use this output to
notify a control device such as a PLC of abnormal operating conditions.
<1> The value of
Δ
n in the drawings depends on the ASR setting in parameters C5-
.
Operating Conditions
Run Command
Forward
Reverse
Forward
Reverse
Forward
Reverse
Forward
Reverse
Torque Reference
Direction
Positive
(Forward)
Positive
(Forward)
Negative
(Reverse)
Negative
(Reverse)
Negative
(Reverse)
Negative
(Reverse)
Positive
(Forward)
Positive
(Forward)
Speed Limit
Direction
Positive
(Forward)
Negative
(Reverse)
Negative
(Reverse)
Positive
(Forward)
Positive
(Forward)
Negative
(Reverse)
Negative
(Reverse)
Positive
(Forward)
Normal Operation
Direction
Forward
Reverse
Forward
Reverse
Bidirectional Speed
Limit Bias
(d5-08 = 0)
Unidirectional
Speed Limit Bias
(d5-08 = 1)
Application Example
Winder
Unwinder
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
Speed Limit
Bias
d5-05
0
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
Speed Limit
Bias
d5-05
Δ
n
d5-05
0
Δ
n
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
0
Δ
n
Δ
n
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias d5-05
Speed Limit
Bias
d5-05
Δ
n
0
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
0
Δ
n
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
Δ
n
0
Δ
n
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed Limit
Speed Limit
Bias
d5-05
0
Δ
n
Δ
n
Speed
Torque
Torque
Limit
Internal
Torque
Reference
Torque
Limit
Speed
Limit
Speed Limit
Bias
d5-05
M
Torque
Torque
Line Direction
Line Direction
M
Speed
Speed
M
M
Torque
Line Direction
Line Direction
Speed
Torque Speed
MV1000ParameterGuide_E_conditional_chap2-4.fm 151 ページ 2013年10月16日 水曜日 午前10時49分