Operation; Normal Operation - Presys DCY-2057 Technical Manual

PRESYS
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Instruments

3 - Operation

3.1 - Normal operation

The DCY-2057 Controller has two modes of operation: normal mode and
configuration mode.
In normal operation mode we can further have the automatic operation mode
and the manual operation mode.
In the automatic operation mode (closed loop system) the Controller receive
the input signals, compare them with the setpoints and automatically generate
through control algorithms the output signals which adjust the input signals to the
setpoints.
In the manual operation mode (open loop system) the user himself establishes
the values in output percentage to control the measured variables.
The selection between the automatic and manual modes is made through the
automatic/manual (A/M) key on the Controller front panel. When in the manual mode
the green LED, indicating the manual state, is on.
The Controller normal mode, in which it operates most of the time, will be
named zero level. In this level the upper display can show: denomination of setpoint
1 (SP 1), denomination of output 1 (OUT1), denomination of setpoint 2 (SP 2),
denomination of output 2 (OUT2), value of input 1 (IN 1) and value of input 2 (IN 2).
The lower display can show: the value of setpoint 1 (V_SP 1), the value of output 1
(V_OUT 1), the value of setpoint 2 (V_SP2) and the value of output 2 (V_OUT 2).
Whenever the Controller is powered on, it starts a display indication of the last
selection shown, before being disconnected. In order to switch to other options, the
UP, DOWN and ENTER keys should be used, as illustrated in figure 10.
Figure 10, below, illustrates all the display presentation possibilities at the
operation level.
DCY - 2057 Pressure Controller
Operation
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