ABB ACS255 - Page 2

COMMUNICATION INTERFACE
ACS250/ACS255 RJ45 Port Connections
SPECIFICATIONS
Max Relay switching voltage: 250V AC / 220V DC
Max Relay switching current: 1A
Max input voltage : +/- 50V DC
Environmental : -10ºC … +50ºC
Conformity : IP00, UL94V-0
OPERATION
Programming the first relay output
Since the first relay output (fitted within the ACS250/ACS255 (115V-
480V Variant) is programmed using parameter 1401 in the drive,
two completely independent relay outputs are available. The
following options are supported for relay 1 :
1401
Relay 1 output function select (RO1)
0 : Drive enabled
1 : Drive healthy
2 : Motor at target speed
3 : Drive tripped
4 : Motor speed >= limit
5 : Motor current >= limit
6 : Motor speed < limit
7 : Motor current < limit
Defines the function of the user relay 1,
when the operating conditions are met.
Disabled : Contacts open
Enabled : Contacts closed
Options 4 to 7: the Relay output is
enabled using the level set in
parameter 3200
Programming the second relay output
The second relay output is controlled using parameter
1501. This can be set to any of the choices 0-7 as described below:
1501
Relay 2 output function select (RO2)
0 : Drive enabled
1 : Drive healthy
2 : Motor at target speed
3 : Drive tripped
4 : Motor speed >= limit
5 : Motor current >= limit
6 : Motor speed < limit
7 : Motor current < limit
Defines the function of the user relay 2,
when the operating conditions are met.
Disabled : Contacts open
Enabled : Contacts closed
Options 4 to 7 : the Digital output is
enabled using the level set in
Parameter 3200.
Note : Parameters 1401,1501, and 3200 are located in the Long
parameter group, group navigation is detailed in the drive manual.
NOTES
EXPLANATION
The Relay Output Module can be used in applications where the
analog/digital output from the drive is converted to a relay output.
Typical applications are where two relay outputs are required. The
functions of the relays are programmable in the drive and can be
any of the following:
o Drive enabled
o Drive healthy
o Drive at set speed
o Drive at zero speed
o Drive at max speed
o Motor in overload
OPTION CONTROL TERMINALS
* Analog inputs should be connected to terminals 6 & 7.
Note :
The second relay output contacts are available on terminals 8 and 9.
This relay utilises the drive’s analog/digital output for operation -
therefore the analog output is not available when this module is
fitted.
1 2 3 4 5 6 7 8 9 10 11
+ 24V Output
Digital Input 1
Digital Input 2 Digital Input 3
+10V Out
put
* Analog Input
4
0V
RO2NO
RO2COM
RO1NO
RO1COM
82-2ROUT-ABB_V2
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