NOTES:
ON
ON ON
28
29 30
31 32
SCR Screen
B + Positive
A - Negative
AGND
SCR Screen
SeeNote2:Shield
See
No
te 2
ACQ55
0 RS485:
T
erminal Block -X
1
Controller
G
-
+
R
See Note 3: G
rou
nd
SeeNote4: Reference/
Common
1. Use 3 Conductor Cable - 1 twisted triplet. Tie 3rd
wire to AGND: X1-31.
2. Tie shield wires together at Drive - Do Not terminate
at SCR.
3. Te
r
mina
t
es
h
ield
ON
LY at “Groun
d”
t
e
r
m
ina
li
n the
4. Terminate AGND wire at "Reference" terminal in the
Controller.
Controller.
5. SetswitchJ2toOFF. BUSterminationisanactive
network: Pull Up & Pull Down (BIAS) resistors are
on board the ACQ550 Drive.
6. NOTE: the transceiver in the ACQ550 is a full load
device. Only 31 ACQ550 drives may be connected
to a given EIA-485 segment without repeaters.
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