Presys DMY-2030 Light, Technical Manual

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PRESYS
 Instruments DMY-2030-
Light
-5S-Energy
Introduction
Page 1
1.0 - Introduction
1.1 - Description
The DMY-2030-Light-5S-Energy is ideal for security applications in turbines,
hydroelectric plants and thermoelectric generators. It has monitoring capability of
one universal standard input, accepting direct connection of RTD, thermocouple,
current (mAdc) and voltage (mVdc, Vdc). The inputs RTD and thermocouple are
automatically linearized by tables stored in the EPROM. A 24 Vdc power supply,
isolated from the output and short circuit protection is provided for transmitters.
The type of input selected by the user is enabled through via software
configuration, following the input signal connection to the appropriate terminals. All
configuration data are protected by a system password and are stored in non-
volatile memory in case of power failure.
Designed within the concept of modularity, accepts up to 5 output cards.
Can have a retransmitter output (4-20 mA, 1-5 V, 0-10 V) and up to four relay
outputs (SPST relay, SPDT relay, solid state relay or open collector voltage). In
case of sensor breaking, the trip alarm is not triggered (configurable for 4-20 mA,
1-5 V, TC and RTD inputs) and the analog output takes preconfigured security
value. The alarm outputs can be configured, independently, to work with latch,
demanding recognition of the operator through the front-panel push-buttons of the
instrument to be disabled after the return of the process variable to normal. The
outputs are electrically isolated from the inputs. In addition to the high and low alarms,
you can set the indicator for failure alarms (
watchdog
).
Fig. 1 - DMY-2030-Light-5S-Energy Front Panel
The front panel has a high visibility display configurable up to 4 ½ digit to show the
process variable. The pair of leds is used as a visual indication of the execution of the
start-up process, in which the state of the alarm relays is kept fixed for a period of time
defined by the user. In setup time, the display shows the mnemonic and parameter
values.
Allows a universal power 75-264 Vac50/60 Hz or 100-360 Vdc (any polarity).
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