Basis Weight Actuator
2
Table 1. Specifications
Actuator Sizes
J 20HT J 30HT or J 40HT
HT denotes High Torque
Enclosure Protection
Actuator/Motor: IP54
IC2000: IP55
Remote Station: IP40
Resolution (for 90 Degrees of Valve Rotation)
(2)
Size 20HT: 5600 steps
Size 30HT: 8800 steps
Size 40HT: 11300 steps
Actuator Torque
0% Backlash Rating
Size 20HT: 180 NSm (1590 lbfSin)
Size 30HT: 380NSm (3360 lbfSin)
Size 40HT: 580NSm (5130 lbfSin)
Motor Torque Required
Size 20HT: 4.3 NSm (38 lbfSin)
Size 30HT: 5.7 NSm (50 lbfSin)
Size 40HT: 7.0 NSm (62 lbfSin)
Stroking Time
(2)
Size 20HT: 20 to 1120 seconds
Size 30HT: 20 to 1760 seconds
Size 40HT: 20 to 2260 seconds
Stepping Speeds (programmable)
Slow: 5–1000 steps/sec
Fast : 600–1000 steps/sec
Gear Ratio
(2)
Size 20HT: 1:56
Size 30HT: 1:88
Size 40HT: 1:113
Actuator Rotation
0 to 90 degrees
Motor Drive
Type: Bipolar, 20 KHz chopper
For Stepmotor Types: 2-phase, hybrid or permanent
magnet, 1mH to 10mH per phase, in 4, 6 or 8 wire
configuration
Current Adjustment: 2.1 to 3.0 A per phase, in 0.3 A
increments
Operation Modes: Half-step (default, for highest res-
olution) or full-step
Short Circuit Protection: Logic automatically inter-
rupts motor currents when a phase-to-phase or
across-phase fault occurs. Power must be cycled to
reset the fault.
Maximum Distance from IC2000 to Actuator
40 m (132 ft) with 1.5 mm
2
conductor
100 m (320 ft) with 2.5 mm
2
conductor
Control Signal (Customer Supplied)
(3)
Increase: Opens valve
Decrease: Closes valve
Slow Speed: Switches to the slow step speed
Temperature Range
Actuator: -20 to 60_C (-4 to 140_F)
IC2000: -20 to 50_C (-4 to 122_F)
Stepmotor: -20 to 40_C (-4 to 104_F)
(5)
Power Requirements
IC2000: 117, 220, or 240 Vac at 50–60 Hz, 225 VA
Remote Station: 24Vdc
(4)
Position Feedback
Transmitter Type: 4–20 mA, 2 wire transmitter, max
load 1 K ohm
Input Potentiometer: 1 K ohm over 320_ rotation,
Independent linearity +/– 0.5% of 320_ (+/–1.8% of
90_), Repeatability 0.1% over 90_
Approximate Weight
IC2000: 21 kg (47 lbs)
Size 20HT: 16 kg (35 lbs)
Size 30HT: 36 kg (80 lbs)
Size 40HT: 61 kg (135 lbs)
Remote Station: 1.4 kg (3.2 lbs)
Dimensions
See figure 2 and Bulletin 51.3:V150 (S1)
1. The pressure/temperature limits in this manual, and any applicable code or standard limitation, should not be exceeded.
2. SKF Crab Actuators using 50 tooth step motors in half-stepping mode have these characteristics for 0–90_ travel. The fastest stroking speeds are approximate. The torque falls off as
speed increases, and the motor may stall before the theoretical highest speed is reached.
3. Each control signal is normally asserted by pulling the input low through external relay contacts. The increase/decrease signals are optically isolated. The speed control input closes a
24 volt relay coil circuit. A factory option is available for Open-Collector logic supplied by 24 Vdc/8 mA from an external power supply.
4. When factory supplied, a bridge rectifier is mounted in the IC2000 to develop this from one of the power transformer windings. If field mounted, customer supplies the 24 Vdc power.
5. Free air ating at max current. Based on still air in motor without air sinks.
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