6-28
6.2.4.2 Wiring
Wiring between the PG interface expansion card and a pulse generator, PG, or other device
• Use shielded wire for PG interface expansion card wiring. Wiring length is subject to constraints
depending on the interface type (see table below).
• Connect the shielded wire's housing to the external device or the motor's earth terminal and leave open
at the inverter.
• To prevent malfunctions due to noise on PG interface expansion card wiring, leave as much distance
as possible between wiring and the inverter's main circuit wiring and other power lines (10 cm or
more) and never place wiring in the same conduit as power lines.
Table 6.2.8
External interface
Wiring length
guideline
Application
Line driver type
Within 50 m
Use when connecting a line driver output type encoder. The 50 m
figure for wiring length is a guideline based on the assumption that
measures have been taken to limit the voltage drop, for example by
using thicker signal wires for power lines (PGP, PGM).
Open collector output
type
Can be used when connecting the master device's [FA] and [FB]
open collector outputs to [PA] and [PB] on the slave PGo (PR).
Voltage output type
Within 10 m
Use when connecting a voltage output device or a device that uses
an external power supply. It is necessary to exercise caution
concerning the maximum voltage of 15 V and threshold values. (L
level voltage detection: 0 V to 2 V; H level voltage detection: 4 V
to 15 V)
Recommended insulation converters (insulated amps)
• When the wiring length will be 50 m or greater with a line driver type device (combination of motor
PG and FRENIC-VG), use an insulation converter. The insulated amp type and manufacturer are as
follows:
SHC-205P05D (HEIDENHAIN Corporation): 200 V power supply input
SHC-105P05D (HEIDENHAIN Corporation): 100 V power supply input
• When connecting multiple FRENIC-VG units in parallel to the slave device using open collector type
signaling, the maximum number of slave devices is one. When connecting two or more devices, use
an insulated amp. The insulated amp type and manufacturer are as follows:
SHC-205C24C (HEIDENHAIN Corporation): 200 V power supply input
SHC-105C24C (HEIDENHAIN Corporation): 100 V power supply input
Содержание FRENIC-VG Series
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