GE af-600 fp Quick Manual page 12

Installation
3.4.5.4 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.
50/60Hz ground loops
With very long control cables, ground loops may occur. To
eliminate ground loops, connect one end of the shield-to-
ground with a 100nF capacitor (keeping leads short).
Avoid EMC noise on serial communication
To eliminate low-frequency noise between adjustable
frequency drives, connect one end of the shield to
terminal 61. This terminal is connected to ground via an
internal RC link. Use twisted-pair cables to reduce
interference between conductors.
3.4.5.5 Control Terminal Functions
Drive functions are commanded by receiving control input
signals.
•
Each terminal must be programmed for the
function it will be supporting in the parameters
associated with that terminal. See Table 3.2 for
terminals and associated parameters.
•
It is important to confirm that the control
terminal is programmed for the correct function.
•
The default terminal programming is intended to
initiate drive functioning in a typical operational
mode.
3.4.5.6 Terminal 53 and 54 Switches
•
Analog input terminals 53 and 54 can select
either voltage (0 to 10V) or current (0/4–20mA)
input signals
•
Remove power to the drive before changing
switch positions
AF-600 FP Quick Guide
•
•
•
•
Illustration 3.14 Location of Terminals 53 and 54 Switches
DET-759A
Set switches A53 and A54 to select the signal
type. U selects voltage, I selects current.
The switches are accessible when the keypad has
been removed (see Illustration 3.14). Note that
some option cards available for the unit may
cover these switches and must be removed to
change switch settings. Always remove power to
the unit before removing option cards.
Terminal 53 default is for a speed reference signal
in open-loop set in DR-61 Terminal 53 Switch
Setting
Terminal 54 default is for a feedback signal in
closed-loop set in DR-63 Terminal 54 Switch
Setting
3 3
130BT310.10
11