Specifications
7
7.7 Common Bypass Specifications
YASKAWA SIEPYAIH6B01A HV600 AC Drive Bypass Technical Reference 539
7.7 Common Bypass Specifications
Note:
To get the longest product life, install the bypass in an environment that meets the necessary specifications.
Table 7.14 Control Characteristics
Item Specification
Control Method V/f Control (V/f)
Frequency Control
Range
0.01 Hz to 400 Hz
Frequency Accuracy
(Temperature
Fluctuation)
Digital inputs: Within ±0.01% of the maximum output frequency (-10 °C to +40 °C (14 °F to 104 °F))
Analog inputs: Within ±0.4% of the maximum output frequency (25 °C ±10 °C (77 °F ±18 °F))
Frequency Setting
Resolution
Digital inputs: 0.01 Hz
Analog inputs: 1/2048 of the maximum output frequency (11-bit)
Output Frequency
Resolution
0.001 Hz
Frequency Setting
Signal
Main speed frequency reference: 0 Vdc to 10 Vdc (20 kΩ), 4 mA to 20 mA (250 Ω), 0 mA to 20 mA (250 Ω)
Starting Torque 140%/3 Hz
Speed Control Range 1:40
Accel/Decel Time
0.1 s to 6000.0 s
The bypass can set two pairs of different acceleration and deceleration times.
V/f Characteristics Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
Main Control
Functions
Restart After Momentary Power Loss, Speed Search, Overtorque/Undertorque Detection, 8 Step Speed (max.), Accel/Decel Switch, S-curve Acceleration/
Deceleration, Auto-Tuning (Rotational and Stationary), Cooling Fan ON/OFF Switch, Slip Compensation, Torque Compensation, Jump Frequency, Upper/
Lower Limits for Frequency Reference, DC Injection Braking at Start and Stop, Overexcitation Braking, High Slip Braking, PID Control (with Sleep
Function), Energy Saving Control, APOGEE FLN Communication (RS-485 4.8 or 9.6 kbps), BACnet Communication (RS-485 max. 76.8 kbps), MEMOBUS/
Modbus Communication (RS-485 max. 115.2 kbps), Metasys N2 Communication (RS-485 9.6 kbps), Auto Restart, Application Presets, Overexcitation
Deceleration, Overvoltage Suppression
Table 7.15 Protection Functions
Item Specification
Motor Protection
(Drive and Bypass
Modes)
Electronic thermal overload protection
Momentary
Overcurrent
Protection
(Drive Mode)
Bypass stops when the output current is more than 175% of the rated output current.
Overload Protection
(Drive Mode)
Bypass stops when the output current is more than these overload tolerances:
• 110% of the rated output current for 60 seconds
• 140% of the rated output current for 2.5 seconds when the bypass output frequency is 3 Hz
The permitted frequency of overload is one time each 10 minutes.
Note:
If output frequency < 6 Hz, the bypass can trigger the overload protection function when the output current is in the overload tolerance range.
Overvoltage
Protection
(Drive Mode)
208/240 V: Stops when the DC bus voltage is more than approximately 410 V
480 V: Stops when the DC bus voltage is more than approximately 820 V
Undervoltage
Protection
(Drive Mode)
208/240 V: Stops when the DC bus voltage decreases to less than approximately 190 V
480 V:
• Stops when the DC bus voltage decreases to less than approximately 350 V when you use an input voltage less than 400 V
• Stops when the DC bus voltage decreases to less than approximately 380 V when you use an input voltage less than 460 V
• Stops when the DC bus voltage decreases to less than approximately 440 V when you use an input voltage of 460 V or more
Brownout Protection
(Drive and Bypass
Modes)
-
Momentary Power
Loss Ride-thru
(Drive and Bypass
Modes)
Immediately stops when power loss is 15 ms or longer.
Will automatically restart after power is restored. (depending on parameter settings)
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