Relay Output Control
Using the fieldbus for relay output control requires:
•
Drive parameter values set as defined below.
• Fieldbus controller supplied reference word(s) in the
appropriate location. (The location is defined by the
Protocol Reference, which is protocol dependent .)
Table 53: Relay Output Control Protocol Reference
Drive Parameter
Value
Setting
Protocol Reference
Modbus
1
N2
FLN
BACnet
abb drv
dcu profile
1401
RELAY OUTPUT 1
35 (COMM)
Relay Output 1 controlled by
fieldbus.
40134 bit 0 or 00033
BO7
40
BO0
1402
1
RELAY OUTPUT 2
35 (COMM)
Relay Output 2 controlled by
fieldbus.
40134 bit 1 or 00034
BO8
41
BO1
1403
1
RELAY OUTPUT 3
35 (COMM)
Relay Output 3 controlled by
fieldbus.
40134 bit 2 or 00035
BO9
42
BO2
1410
1
RELAY OUTPUT 4
35 (COMM)
Relay Output 4 controlled by
fieldbus.
40134 bit 3 or 00036
BO10
43
BO3
•
1
More than 1 relay requires the addition of a relay extension module
For example:
To control relays 1 and 2 using serial communication:
Set parameters 1401 RELAY OUTPUT 1 and 1402 RELAY OUTPUT 1 = 35 (COMM) .
Then, for example using N2:
• To turn Relay 1 On: Force object B07 to On .
• To turn Relay 2 On: Force object B08 to On .
• To turn both Relay 1 and 2 On: Force objects B07 and B08 On .
NOTE:
Relay status feedback occurs without configuration as
defined below.
Table 54: Relay Status Feedback Protocol Reference
Drive Parameter
Value
Setting
Protocol Reference
Modbus
N2
FLN
BACnet
abb drv
dcu profile
0122
RO 1-3 STATUS
Relay 1…3 status .
40122
0122
BI4…
BI6
76… 78
BI0…
BI2
0123
RO 4 STATUS
Relay 4 status .
40123
0123
BI7
79
BI3
f
Ieldbus
C
onTrols
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OM 1190-1 • MD4 VFD
Summary of Contents for ACS320
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