ABB ACH580 Series User Manual page 87

78
Preferred wiring diagram
NOTES:
1. Use 3 Conductor Cable - 1 twisted triplet. Tie 3rd wire to AGND:
X2-29.
2. Tie shield wires together at Drive - Do Not terminate at SCR.
3. Terminate shield ONLY at "Ground" terminal in the Building
Automation Controller.
4. Terminate AGND wire at "Reference" terminal in the Building
Automation Controller.
5. The transceiver in the E-Clipse bypass is a 1/8th load device. Only
255 ACH550 drives with E-Clipse bypass may be connected to a
given EIA-485 segment without repeaters. Network biasing is
required per ANSI / ASHRAE Standard 135.
Alternate wiring diagram
NOTES:
1. Use 2 Conductor Cable - 2 twisted pair w/shield.
2. Terminate shield at "Reference" terminal
Embedded fieldbus
ABB E-CLIPSE BYPASS RS485:
Terminal Block: X2
26 27
See Note 2: Shield
ABB E-CLIPSE BYPASS RS485:
Terminal Block: X2
26 27
Tie 3rd & 4th wire (2nd pair) to AGND: X2-29.
in the Building Automation Controller!
ACH580 E-Clipse bypass and packaged drive user manual
ON
ON
28 29 30
See Note 3: Ground
See Note 4: Reference/Common
Building Automation
Controller
ON ON
28 29 30
See Note 2: Reference/Common
Building Automation
Controller
Required Wiring:
ANSI/ASHRAE Standard 135
(Twisted Pair and Reference
with Isolated Devices)
ON
See Note 5
–
G R +
ALTERNATE WIRING:
4 Conductor with Shield
-
+
G R