Limitorque
®
Master Station IV EEP-SN4001 FCD LMENIM5010-00-AQ – 03/19
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Introduction
1.1 Overview
The next generation master station is designed by Flowserve Limitorque specifically for use
with the Limitorque line of electric actuators equipped with Modbus DDC. The Master Station IV
(MSIV) acts as a single-source controller for up to 250 actuators.
The MSIV is a plug-and-play solution that provides complete control, monitoring, and diagnos-
tics of Limitorque electric actuators through a simple touch-panel display serving as a Human
Machine Interface (HMI).
1.2 User Role Overview
The MSIV requires users to login. Four user role levels are configurable for each user: 1) View,
2) Control, 3) Configure, and 4) Administrator. Each role includes the rights of the lesser roles
(i.e. Control includes View’s rights, and Configure includes Control’s rights and View’s rights).
VIEW: the user can view the network status and the activity log. No control
or configuration functionality is available.
CONTROL: in addition to the View rights, the user has the ability to control
MOVs.
CONFIGURE: in addition to the Control rights, the user has the ability to configure
the Master Station and the Network.
ADMINISTRATOR: in addition to Configure rights, the user has the ability to add or
delete users, as well as modify user settings.
These roles can be changed by an Administrator user. See section the User Administration
section for details.
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