Remote Control Of The States By Plc - Re T-two User Manual

Re
S.p.A.

Remote control of the states by PLC

The T-two unit is equipped with four digital inputs that are used to control the state of the regulator.
For a detailed description of the operating logic used to activate these inputs (closure of a 24Vdc
contact) see the paragraph Remote control of states by PLC in the unit installation manual.
It is important to note that the EMERGENCY remote command is a "virtual" function only and does not
correspond to any of the physical inputs and is activated only if both the ACC and DEC remote contacts
are active, as illustrated in diagram 1 below.
By using the ACC (F.6) and DEC (F.11) state delays it is possible use a different set of parameters, for
a predetermined period, in order to optimise the way the system reacts to the during the start and stop
phase transients using nothing more than the AUTO/STOP remote command.
AUTO/STOP
T-two STATE
Diagram 1: AUTO/STOP and REEL SELECTION command functions
Regulator states
Display indication
-S-
-AU
-AC
-d-
-0-
-E-
Rev. 05/15
ACC
DEC
STOP ACC
State
STOP
AUTO
ACC
DEC
ZERO
EMERGENCY
AUTO EMERGENCY
Description
Machine stationary
Machine operating at working speed
Machine in acceleration phase
Machine in deceleration phase
Machine stationary + Reel released
Machine in rapid stop phase
T-two – standard model
STOP
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