Analog DC Drive
DC Drives manufactured by us are highly sophisticated and features provided are rarely available in its contemporary system
Features:
Enhance performance by advance technique such as:
- Phase Locked Loop (PLL) ensure flawless synchronization despite polluted mains and compensates for mains voltage variation
- C.T. Operated field protection to make a precise tripping
- Train of firing pulses by using ferrite core transformers ensure reliable triggering of thyristor
- Adaptive regular gives optimum response under varying load conditions
- speed amplifier has facility for external current limit
- Current amplifier has facility for external current reference
- A trip relay with electrical latch provides interlock with motor
- The control card incorporated LED monitoring to assist in rapid fault diagnosis
- Provision to monitor the selected points via PLC
- Designed for larger power supply variations
- To eliminate the Re-Tuning of control card, adjustments and terminal row for external connection broght to a separate card
- Flat ribbon cable eliminates cumbersome conventional wiring to facilitate quick replacement
Control Facilities:
- Linear acceleration / deceleration ramp provides independent adjustment of an acceleration and deceleration rates over a range of 2 - 30 Sec. If not required can be linked out
- Minimum speed adjustment
- Maximum speed adjustment
- Current limit
- Jogging / Inching
- Motor overload adjustment
- 200% of full load current at 10 Sec.
- 150% of full load current at 20 Sec.
- 125% of full load current at 40 Sec.
- 100% of full load current no tripping
- Motor Stability
- Speed gain
LED indications to fault diagnosis:
• +15V / -15V
• Drive Trip
• Motor Off
• Feedback Loss
• Field Loss (CT operated)
|
• Phase Loss / Reverse
• Overload • Current Limit
• Internal Fault
|
Operating Data:
Input AC Supply |
: |
3 Ph. 415V AC ±10% |
|
: |
50 Hz. Limit 47 - 62 Hz |
Output Voltage |
: |
0 - 440V DC to Armature |
|
: |
220V DC to Field |
Ambient Temp |
: |
45° C |
Humidity |
: |
95% Max. Non Condensing |