ABB RTAC-01 User Manual page 16

Chapter 3 – Installation
Encoder power
consumption
P + 2.0 W
idle
P + 1.75 W
idle
P + 1.5 W
idle
P + 1.25 W
idle
P + 1.0 W
idle
P + 0.75 W
idle
P + 0.5 W
idle
P + 0.25 W
idle
EPN = 1024 ppr:
EPN = 2048 ppr:
EPN = 512 ppr:
EPN = Encoder pulse number
P = Encoder power consumption when idle. See encoder documentation.
idle
Figure 3-2 Approximate power consumption of an encoder for four different
cable lengths. The chart is based on a measurement with a 24 V DC, 1024 ppr
pulse encoder with differential outputs coupled to a motor shaft rotating at 1500
rpm.
3-4
P
idle
0 300 600 900 1200 1500 1800 2100 2400
0 150 300 450
0 600 1200 1800 2400 3000 3600 4200 4800
600 750 900 1050 1200
Cable length
300 m
150 m
100 m
20 m
Motor
2700 3000
speed
1350 1500
(rpm)
5400 6000
RTAC-01 User's manual