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Technical description
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
DC bus link
Motor cables
Resolver, thermostat-motor
Encoder, thermostat-motor
Setpoints, monitors, AGND
Control signals, BTB, DGND 0.5 mm² (20 awg)
Holding brake (motor)
+24 V / XGND
Regen resistor
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.
6.3
LED display
A 3-character LED display shows the amplifier status after switching on the 24V supply
(ð p.91). During operation and parameter setting of the amplifier via the keys on the front panel, the
parameter and function numbers (ð p.91) are displayed, as well as the numbers of any errors
which occur (ð p.92).
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).
20
06/2007
25 mm² (2 awg), shielded between filter and amplifier, 600V,105°C
(221°F)
25 mm² (2 awg), shielded for lengths > 20 cm, 600V,105°C (221°F)
ð p.41, cross section see manual of the used motor series,
capacitance <250pF/m, 600V,105°C (221°F)
4x2x0.25 mm² (22awg) twisted pairs, shielded, max.100m,
capacitance <120pF/m
7x2x0,25 mm² (22awg) twisted pairs, shielded, max.50m,
capacitance <120pF/m
0.25 mm² (22awg) twisted pairs, shielded
min. 1.5 mm² (14 awg), 600V,105°C (221°F), shielded,
check voltage drop
max. 2.5 mm² (12 awg), check voltage drop
ð p.41, min. 10 mm² (6 awg), shielded, 1000V,105°C (221°F)
AX2040/2070 Product Manual
BECKHOFF
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