ABB ACH550-UH User Manual page 454

Ach550 series, hvac drives (1...550 hp), e-clipse bypass drives (1...400 hp), packaged drives with disconnect (1...550 hp)
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2-108
Parameter
Number
5307
(5007)
DV CRC
ERR
5309
(5009)
DV STATUS
5316
(5016)
DV PAR 16
(BACnet
Only)
5306
(5006)
DV OK MSG
1. Reset by pressing UP & DOWN arrows simultaneously in edit mode. Save change by pressing
ENTER.
Embedded fieldbus
Display on
Panel
Possible Cause
(Symptom)
Rapidly
1. Duplicate
Increasing
Addresses
Numeric
2. Too many devices
1
Value
on wire
3. Noise on EIA-485
wire
IDLE
1. No network
connection
2. Blown EIA-485
transceiver
3. Wrong application
number (FLN only)
Not
1. Drive device
Increasing
address parameter
Numeric
5302 is set to 128 or
Value
greater.
2. E-Clipse Bypass
device address
parameter 5002 is
set to 128 or greater.
3. Max Masters is set
too low on all drives.
OK
1. Master/Client not
Message
communicating with
Counter not
drive.
1
increasing
2. Failed router
ACH550 E-Clipse Bypass User's Manual
Corrective Action
1. See Corrective Action 1. Parameter
Number 5308 (5008)
2. Limit to 31 unit loads on 1 segment
(ACH550 = 1 unit load)
3. See Corrective Action 6. Parameter
Number 5308 (5008)
1. Land communication wires as shown in
drawings on page 1-188. Check
Repeater (if installed onsite)
2. See Corrective Action 7. Parameter
Number 5308 (5008)
3. Change application number in the
Siemens field panel.
1. Change parameter 5302 to a unique value
below 128.
2. Change parameter 5002 to a unique value
below 128.
Note: The default value for parameter
5002 is 256. This setting prevents the
network from seeing the bypass. Change
this setting ONLY if the bypass will be
seen as a node on the network.
3. Change Max Masters property at all
devices on bus to 127.
1. Add device and points to the building
control system.
2. Replace router.

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