March 2021
Installation, Operation and Maintenance Manual
MDE 254 Rev. 1
Device Variables54
Section 9: Device Variables
Value Description
0 Off: Function Disabled
1 Close
2 Open
3 Stay-Put
4 Go to Position
Value Description
0 AC 3 Ph
1 AC 1 Ph
2 DC
9.27 Device Variable 24: Fail Safe Delay
This variable indicates the delay time before running the fail safe action (Device Variable 30).
9.28 Device Variable 25: Fail Safe Position
This variable indicates the position to drive the actuator when the fail safe action (Device Variable 30)
is programmed to “Go to position”.
9.29 Device Variable 26: Power Supply Type
This variable indicates the actuator power supply type. This is an enumerated variable, it’s not
possible to write this data. The possible values are:
Table 146.
9.24 Device Variable 21: 2SP – Open Direction
ON Time
This variable indicates the ON time of motor in 2 Speed Timer operation in open direction.
9.25 Device Variable 22: 2SP – Open Direction
OFF Time
This variable indicates the OFF time of motor in 2 Speed Timer operation in open direction.
9.26 Device Variable 23: Fail Safe Action
This variable indicates the action to run in case of 4 - 20 mA input signal failure. This in an enumerated
variable, the possible values are:
Table 145.
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