Omron Q2A Series Technical Manual page 358

10.3 Drive Specifications
Item
Approximately 20%
Approximately 125% with a dynamic braking option
• Short-time average deceleration torque
Motor output 0.4/0.75 kW: over 100%
Motor output 1.5 kW: over 50%
Motor output 2.2 kW and larger: over 20%, Overexcitation Braking/High Slip Braking allow for approximately 40%
Braking Torque
• Continuous regenerative torque: Approximately 20%. Dynamic braking option allows for approximately 125%, 10% ED, 10 s
Note:
• Models 4002 to 4168 have a braking transistor.
• Short-time average deceleration torque refers to the torque needed to decelerate the motor (uncoupled from the load) from the rated speed to zero.
Motor characteristics can change the actual specifications.
• Motor characteristics change the continuous regenerative torque and short-time average deceleration torque for motors 2.2 kW and larger.
V/f Characteristics
Select from 15 pre-defined V/f patterns, or a user-set V/f pattern.
Torque Control, Droop Control, Speed/Torque Control Switching, Feed Forward Control, Zero Servo Function, Restart After Momentary Power Loss,
Speed Search, Overtorque/Undertorque Detection, Torque Limit, 17 Step Speed (max.), Accel/Decel Switch, Jerk Control, 3-wire Sequence, Auto-Tuning
(Rotational and Stationary), Dwell Function, Cooling Fan ON/OFF Switch, Slip Compensation, Torque Compensation, Frequency Jump, Upper/Lower
Main Control
Limits for Frequency Reference, DC Injection Braking at Start and Stop, Overexcitation Braking, High Slip Braking, PID Control (with Sleep Function),
Functions
Energy Saving Control, Modbus Communication (RS-485 max, 115.2 kbps), Auto Restart, Application Presets, Q2pack (customized functions),
Removable Terminal Block with Parameter Backup Function, Online Tuning, KEB, Overexcitation Deceleration, Inertia (ASR) Tuning, Overvoltage
Suppression, High Frequency Injection
Item
Electronic thermal overload protection
Motor Protection
Momentary Drive stops when the output current is more than 200% of the HD output current.
Overcurrent
Protection
Drive stops when the output current exceeds these overload tolerance.
• HD: 150% of the drive rated output current for 60 s
• ND: 110% of the drive rated output current for 60 s
Overload Protection
Note:
• The drive can trigger the overload protection function within the overload tolerance if the output frequency is less than 6 Hz.
• Do not allow the overload more than once every ten minutes.
Overvoltage
400 V class: Stops when the DC bus voltage is more than approximately 820 V
Protection
Undervoltage 400 V class: Stops when the DC bus voltage decreases to less than approximately 380 V
Protection
Stops when power loss is longer than 15 ms.
Continues operation if power loss is shorter than 2 s (depending on parameter settings).
Momentary Power
Note:
Loss Ride-thru
• Stop time may be shortened depending on the load and motor speed.
• Drive capacity will change the continuous operation time. A Momentary Power Loss Recovery Unit is necessary to continue operation through a 2 s
power loss on models 2004 to 2056 and 4002 to 4031.
Heatsink Overheat
Thermistor
Protection
Braking Resistor Overheat detection for braking resistor (optional ERF-type, 3% ED)
Overheat Protection
Stall prevention is available during acceleration, deceleration, and during run.
Stall Prevention
Electronic circuit protection
Note:
Ground Fault
This protection detects ground faults during run. The drive will not provide protection when:
Protection
• There is a low-resistance ground fault for the motor cable or terminal block
• Energizing the drive when there is a ground fault.
DC Bus Charge LED Charge LED illuminates when DC bus voltage is more than 50 V.
Environment
Area of Use Indoors, 3C2 (IEC 60721-3-3)
Overvoltage Category III (IEC 61800-5-1)
Power Supply
IP20 enclosure: -10 °C to +60 °C (14 °F to 140 °F). Derate the output current and output voltage if the drive is installed in areas with ambient temperatures
from +50 °C to +60 °C (122 °F to 140 °F).
UL Type 1 enclosure: -10 °C to +50 °C (14 °F to 122 °F). Derate the output current and output voltage if the drive is installed in areas with ambient
temperatures from +40 °C to +50 °C (104 °F to 122 °F).
Ambient
• Drive reliability is better in environments that do not have wide temperature fluctuations.
Temperature Setting
• When installing the drive in an enclosure, use a cooling fan or air conditioner to keep the internal air temperature in the permitted range.
• Do not let the drive freeze.
• To install the drive in areas with ambient temperatures 40 °C to 60 °C (104 °F to 140 °F), derate the output current.
95% RH or less, non-condensing
Humidity
Storage Temperature -20 °C to +70 °C (-4 °F to +158 °F) (short-term temperature during transportation)
358
Specification
Table 10.7 Protection Function
Specification
Table 10.8 Environment
Conditions
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual