Appendix A – Specifications
67
Amplifier
Type – GV6K Servos
:
GV6K-L3n:
40 kHz PWM;
3 phases
GV6K-U3n:
8 kHz PWM;
3 phases
GV6K-U6n/U12n:
8, 16, 20 kHz PWM;
3 phases
GV6K-H20n:
8, 16, 20 kHz PWM;
3 phases
GV6K-H40n:
8, 16, 20 kHz PWM;
3 phases
Type – GT6K Steppers
:
20 kHz fixed frequency, variable duty cycle PWM, current controlled,
recirculating, bipolar type, MOSFET construction.
2 Phases: bipolar motor configuration only.
Auto Standby: When enabled, motor current reduces to a percentage of
present value, when no step pulses are received for one second. (See
DAUTOS command.)
Environmental Specifications
GT6K-L5/L8;
GV6K-L3n/U3/U6/U12n;
GV6K-H20 (with
< 25W regen);
GV6K-H20 (with
GV6K-H40
<100W regen)
Operating Temperature
:
Still Air:
45
°
C (113
°
F)
35
°
C (95
°
F)
Moving air:
50
°
C (122
°
F)
40
°
C (104
°
F)
Minimum:
0
°
C (32
°
F)
0
°
C (32
°
F)
Storage Temperature
:
-40
°
C – 85
°
C (-40
°
F – 185
°
F)
Humidity:
0 – 95%, non-condensing
Shock:
15g, 11msec half sine
Vibration:
10 – 2000 Hz at 2g
Performance
GV6K Servos – Performance:
Accuracy
:
±
1 encoder count; encoder dependent
GVTK Steppers – Performance:
Accuracy
:
±
5 arc min (0.0833
°
), typical unloaded bidirectional with Compumotor
motors. Other motors may have different absolute accuracy.
±
1 arc minute (0.0167
°
), loaded in addition to unloaded accuracy, per
each frictional load equal to 1% rated torque.
Repeatability:
±
5 arc sec (0.0014
°
), typical unloaded one revolution returning to starting
point from same direction
Hysteresis:
Less than 2 arc min (0.0334
°
) unloaded bidirectional
Resolution:
User definable integer value between 200 and 128,000 steps per
revolution
Waveform:
-20% through 10%, 0.01% resolution, continuously variable, 3
rd
harmonic,
(use DWAVEF command)
