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Drives Service & Support > 1397 > Specifications
Click for Dimensions or Input/Output Ratings
| Input Voltage and Frequency Ratings | |
| Nominal Voltage | 207 to 253 VAC or 414 to 506 VAC (Horsepower-rated drives) 342 to 437 VAC or 374 VAC to 477 VAC (Current-rated drives) |
| Nominal Line Frequency | 50 or 60 cycles per second |
| Frequency Variation | ± 2 cycles of nominal |
| AC Line Fault Capacity | |
| Allowable AC Line Symmetrical | (See Power Ratings and Supply Capacity) |
| AC Line kVA | |
| AC Line Distribution Capacity | Maximum 3 drives per transformer |
| Minimum Source kVA | (See Power Ratings and Supply Capacity) |
| DC Voltage Ratings | |
| 230 VAC Line | |
| Armature Voltage | 240 VDC |
| Field Voltage | 150 VDC |
| 460 VAC Line | |
| Armature Voltage | 500 V DC |
| Field Voltage | 300 VDC |
| Service Factor Ratings | |
| Service Factor | 1.0 Continuous |
| Overload Capacity (drive only) | 150% of full load rating for one minute |
| Minimum Load | 5% of rated load |
| Service Factor Ratings | |
| Service Factor | 1.0 Continuous |
| Overload Capacity (drive only) | 150% of full load rating for one minute |
| Minimum Load | 5% of rated load |
| Service Conditions | |
| Ambient Temperature | |
| Chassis | 55°C (131°F) maximum |
| Cabinet | 40°C (104°F) maximum |
| Altitude | |
| Chassis and Cabinet | 3300 feet above sea level |
| Above 3300 feet | Derate 3% for every 1000 ft above 3300 ft up to 10000 ft. |
| Humidity | |
| Chassis and Cabinet | 5 to 95% non-condensing |
| Environment | The drive should be located in an area that is free of dust, dirt, acidic or caustic vapors, vibration and shock, temperature extremes, and electrical or electromagnetic noise interference. |
| Regulation | |||
| Tachometer Speed Regulation | |||
| Regulation Arrangement | Speed Change with 95% Load Change | Speed Change from All other Variables | Kit Model Number |
| Armature voltage regulation w/IR Compensation | 2-3% | 15% | Standard |
| Closed Loop | |||
| (DC Tach Feedback | 1% | 2% | Standard |
| (Pulse Encoder Feedback ) 1 (RD-120 Pulse Encoder FDBK) 1 |
0.01% | 0.01% | 1397 - PE |
| 1. Optional pulse encoder feedback kit required. | |||
| Speed Change | |
| Operator's Speed Adjustment | 0 to rated speed |
| Specification Speed Range | 100:1 based on top speed and tachometer |
| Drive Efficiency | |
| Drive Only | 98.6% (rated load and speed |
| Drive and Motor | 85% typical |
| Note: Typical percent shown depends on motor operating speed and frame size. | |
| Power Ratings | |
| Displacement Power Factor | 88% typical (rated load and speed) |
Note: Typical percent shown depends on motor operating speed and frame size. |
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