6.2.4
Conductor cross-sections
Observe the technical data for connection cables
ð
p. 41.
Following EN 60204 (for AWG: table 310-16 of the NEC 60°C or 75°C column), we recommend for
single-axis systems
:
AC connection
25 mm² (2 awg), shielded between filter and amplifier, 600V, 80°C
(176°F)
DC bus link
25 mm² (2 awg), shielded for lengths > 20 cm, 600V, 80°C (176°F)
Motor cables
ð
p.41, cross section see manual of the used motor series,
capacitance <250pF/m, 600V, 80°C (176°F)
Resolver, thermal control
4x2x0.25 mm² (22awg) twisted pairs, shielded, max.100m,
capacitance <120pF/m
Encoder, thermal control
7x2x0,25 mm² (22awg) twisted pairs, shielded, max.50m,
capacitance <120pF/m
Setpoints, monitors, AGND
0.25 mm² (22awg) twisted pairs, shielded
Control signals, BTB, DGND 0.5 mm² (20 awg)
Holding brake (motor)
min. 1.5 mm² (14 awg), 600V, 80°C (176°F), shielded,
check voltage drop
+24 V / XGND
max. 2.5 mm² (12 awg),
check voltage drop
Brake resistor
ð
p.41, min. 10 mm² (6 awg), shielded, 1000V, 80°C (176°F)
For multi-axis systems, please note the special operating conditions in your installation
To reach the max. permitted cable length, observe cable requirements
ð
p. 41.
* Kollmorgen North America delivers cables up to 39m length.
*
Kollmorgen Europe delivers cables up to the maximum length.
6.3
LED display
A 3-character LED display shows the amplifier status after switching on the 24V supply
(
ð
p.93). During operation and parameter setting of the amplifier via the keys on the front panel, the
parameter and function numbers (
ð
p.93) are displayed, as well as the numbers of any errors
which occur (
ð
6.4
Grounding system
AGND — ground for analog inputs/outputs, internal analog/µC ground
DGND — ground for digital inputs/outputs, optically isolated
XGND — ground for external 24V aux. voltage, optically and inductively isolated
PGND — ground for encoder emulation, RS232, CAN, PROFIBUS, optically isolated
The potential isolation is shown in the block diagram (
ð
p. 43).
SERVOSTAR
®
640/670 Instructions Manual
23
Kollmorgen
12/2010
Technical description
