GE AF-650 GP Series, Design And Installation Manual

Page: 31 / 166

Terminal description
Terminal Parameter
Default
setting Description
42 AN-50 [0] No
operation
Programmable analog
output. The analog
signal is 0–20 mA or
4-20 mA at a
maximum of 500
Ω
50 - +10 V DC 10 V DC analog
supply voltage. 15 mA
maximum commonly
used for potenti-
ometer or thermistor.
53 AN-1# Reference Analog input.
Selectable for voltage
or current. Switches
A53 and A54 select
mA or V.
54 AN-2# Feedback
55 - Common for analog
input
Table 2.3
Terminal description
Terminal Parameter
Default
setting Description
Serial communication
61 - Integrated RC-Filter for
cable screen. ONLY for
connecting the screen
when experiencing
EMC problems.
68 (+) O-3# RS-485 Interface. A
control card switch is
provided for
termination resistance.
69 (-) O-3#
Relays
01, 02, 03 E-24
[0] No
operation
Form C relay output.
Usable for AC or DC
voltage and resistive
or inductive loads.
04, 05, 06 E-24 [0] No
operation
Table 2.4 Terminal Description
2.5.5.3 Wiring to Control Terminals
Control terminal connectors can be unplugged from the
adjustable frequency drive for ease of installation, as
shown in
Figure 2.18 .
1. Open the contact by inserting a small screwdriver
into the slot above or below the contact, as
shown in
Figure 2.20 .
2. Insert the bared control wire into the contact.
3. Remove the screwdriver to fasten the control wire
into the contact.
4. Ensure the contact is firmly established and not
loose. Loose control wiring can be the source of
equipment faults or less than optimal operation.
See 12 Terminal and Applicable Wire for control terminal
wiring sizes.
Figure 2.20 Connecting Control Wiring
2.5.5.4 Using Shielded Control Cables
Correct shielding
The preferred method in most cases is to secure control
and serial communication cables with shielding clamps
provided at both ends to ensure best possible high
frequency cable contact.
If the ground potential between the adjustable frequency
drive and the PLC is different, electrical noise may occur
that will disturb the entire system. Solve this problem by
fitting an equalizing cable next to the control cable.
Minimum cable cross-section: 0.025 in
2
(16 mm
2
).
Figure 2.21
1
Min. 0.025 in
2
[16 mm
2
]
2 Equalizing cable
Table 2.5
Installation AF-650 GP
TM
Design and Installation Guide
2-12 DET-767A
2 2