Inside A Q Actuator; Fig 8: The Mfu Module Profiled For The Q Actuator - rotork Modbus IQ Pro Technical Manual

Rtu actuator control mk2 option card
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3.2 Inside a Q actuator

The MFU is fitted in the option board position in this actuator. Only one option board may be fitted at
any one time. The necessary internal components must also be present; in this case a potentiometer
and auxiliary limit switches at end of travel must be fitted to the actuator.
The illustration (Fig 8) shows the Q version of the circuit board.
Fig 8:
Digital Outputs from relay contacts are not supported from the Q actuator, nor is the ability to report
the status of the remote control inputs as Digital Inputs. The following table shows the wiring
harnesses that must be fitted and the function of each loom for the Q range actuator.
MFU Socket
SK2
SK3
SK9
SK10
SK11
 - Only available on Single Channel module
Note:
In a Q actuator there is a direct connection from PL2 on the Modbus Module to SK5 of the actuator
main board.
To restore the card to its default of Modbus Mk2 and the associated default parameter settings, LK1
should be fitted and the actuator power cycled. In normal operation LK1, shown above in Figure 8,
should not be fitted.
EPROM
LK1
The MFU module profiled for the Q actuator
Wiring Harness
24V power supply input from actuator
Modbus RS-485 Fieldbus connection
Limit switches
Analogue Input connection 
Potentiometer
Publication PUB091-003-00_0119
RS-485 Data Highway, Connections and MFU Setup
SK9
SK11
SK10
SK2
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