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PRESYS
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Instruments
It accepts 90 to 240VAC or 130 to 340VDC (with any polarity) power supply.
The instrument is housed in an extruded aluminum case which makes it highly
immune to electrical noise, electromagnetic interference and resistant to the most
severe and rough industrial use conditions.
On the instrument front panel there are two red displays configurable with the
decimal point for up to four high visibility digits. The upper display can either show the
controlled variable or the mnemonics SP 1, SP 2, OUT 1, OUT 2 corresponding to
the values shown on the lower display. The lower display can show the following
values: channel 1 setpoint, channel 2 setpoint, channel 1 output and channel 2
output. The control outputs 1 and 2 are represented in percentage of full scale
output. The functions of the UP, DOWN and ENTER keys to change the
setpoint/output values are described in section 3.1. The A/M key on the Controller
front panel allows toggling between automatic and manual modes. The green led in
the A/M key indicates, when illuminated, the Controller is in the manual mode and,
when extinguished, the Controller is in the automatic mode. In the Controller
configuration modes both displays show the mnemonics and the parameter values.
The pair of red leds can be used as a visual alarm indication associated to the
outputs of alarms 2, 3 and 4, or can indicate that the measured variable and the
setpoint/output shown on the displays refer to 1 or 2 control loops. We may be
provided with up to three alarm outputs. Each of those alarm outputs may be: by
relay, by open collector or by triac.
DCY - 2057 Pressure Controller
Fig. 1 - DCY - 2057 Controller Front Panel.
DCY-2057
Introduction
Page 2
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