YASKAWA A1000 Technical Manual

5.4 d: Reference Settings
208 YASKAWA ELECTRIC SIEP C710616 27G YASKAWA AC Drive A1000 Technical Manual
 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 d5-08 determines how the speed limit bias is applied. Table 5.20 explains the relation
between these settings.
Table 5.20 Speed Limit, Speed Bias and Speed Limit Priority Selection
 Indicating Operation at the Speed Limit
A digital output can be programmed to close when the drives is operating at or beyond the speed limit (H2- = 32).
Use this output to notify a PLC or some other control device of abnormal operating conditions.
<1> The value of delta 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)
Motor Rotation
Direction
Forward Reverse Forward
Reverse
Bidirectional Speed
Limit Bias
(d5-08 = 0)
<1>
Unidirectional
Speed Limit Bias
(d5-08 = 1)
<1>
Application Example
Winder
Unwinder
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit
Δn
Speed Limit
Bias d5-05
Speed Limit
Bias d5-05
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit
Δn
Speed Limit
Bias d5-05
Speed Limit
Bias d5-05
Δn
Speed
Torque
d5-05
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed Limit
Δn
Speed Limit
Bias d5-05
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit
Speed
Limit Bias
d5-05
Δn
Δn
Speed
Limit Bias
d5-05
Speed
Torque
Δn
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit Bias
d5-05
Speed
Limit
Δn
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed Limit
Bias d5-05
Speed
Limit
Δn
Δn
Δn
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed Limit
Bias d5-05
Speed Limit
Δn
Speed
Torque
Torque
Limit
Internal
Torque
Reference
0
Torque
Limit
Speed
Limit
Speed
Limit Bias
d5-05
Δn
Δn
M
Torque Torque
Line Direction
Line Direction
M
Speed Speed
M
M
Torque
Line Direction
Line Direction
Speed Torque Speed

YASKAWA A1000 Specifications

General

Type	AC Drive
Series	A1000
Input Voltage	200-240V, 380-480V
Frequency Range	0-400 Hz
Horsepower Range	0.5 to 1000 HP
Power Range	0.4 to 630 kW
Control Method	V/f Control
Overload Capacity	150% for 60 seconds
Braking	Dynamic Braking
Communication	Modbus
Safety	Safe Torque Off (STO)
Protection Features	Overcurrent, Overvoltage, Undervoltage, Overheat
Operating Temperature	-10 to +50°C
Storage Temperature	-20 to 60°C
Humidity	5 to 95% RH (non-condensing)
Enclosure	IP20