Control Outputs - rotork Profibus Modbus Module Mk2 Installation Manual

Profibus DP Mk2 Option Card Installation Manual

5.1 Control Outputs

The Profibus DP Module (Mk2) can be used to control the actuator and position the valve. The valve
may be moved fully closed, fully open or to an intermediate position. Additionally, the actuator can
make the valve adopt an Emergency Shut Down position. The actuator may also be operated from its
local controls or by hard-wired direct contact inputs (in the case of the IQ and IQT the Auxiliary Input
Mask must be correctly set).
As well as controlling the actuator the PFU can also be used to operate 4 discrete output relays when
fitted to an IQ/IQT actuator with the extra relay indication board fitted.
The control commands have three potential sources:

Profibus DP network generated commands

Actuator Local Controls

Direct contact input controls
The full list of commands is shown in the table. The actuator types show whether the command is
applicable to that actuator type.
Command
Profibus over the network
Open
Close
Stop
Emergency Shut Down
Analogue Position Demand
Partial Stroke
Multiport Position 
Relay output DO-1
Relay output DO-2
Relay output DO-3
Relay output DO-4
Local Actuator Controls
Open
Close
Stop
Direct Hard-Wired Inputs
Open
Close
Stop/Maintain
Emergency Shut Down (Network Disable)
Open Interlock (active prevents opening)
Close Interlock (active prevents closing)
See notes on next page.
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IQ & IQT
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Publication PUB088-005-00_1017
CVA Q ROMPAK
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