GENERAL CHARACTERISTICS
DIGITAL PRESSURE
CONTROLLER
with one output
EC 3-533
* Size: 74 x 32 mm.
* 12 or 12-24Vac/dc power- supply
* Alarm buzzer included
* Custom configuration through keyboard or Personal
Computer
* Configuration parameters accessible through
Password
* Easy integration with remote-assistance or
remote-managing
EC 3-533 is a digital one output pressure controller, designed to work with current output (0-20 mA or 4-20 mA) 2
or 3 wires pressure transducers and it can provide the power-supply to the transducers as long as they are abled to
work inside a range of supply-voltage between 9 an 20 V.
In factory, the instrument gets programmed to accept, at the input, one of the Every Control transducers (EC PRS 00,
EC PRS 01, EC PRS 02 or EC PRS 03) that permit to cover a range of pressure between -0.5 and 250 bar; however, just
changing some parameters it is possible to connect the instrument to other transducers.
The output can be easily programmed to activate at the decrease of pressure (reverse functioning) or to activate at the
increase of pressure (direct functioning).
The SPDT relay output can manage (up to) 8A loads at 230 Vac and are supplied in standard version; as option, it is
possible to request an output with low-voltage signal, suitable to drive the SSR modules (solid state relay).
Besides that, through some parameters programming, it is possible to submit the output activation to a series of delays,
in order to guarantee a proper use of the connected load.
The acoustic alarm, normally mounted in this instrument, and the flashing display, have been concepted in order to
catch user' s attention in case of not proper functioning: defective probe, corrupted memory-data or probe-signal
outside the limits.
The instrument is provided of two pressure alarms, that can be disabled, each of them is configurable in six different
ways of working; the intervention of each alarm activates the acoustic alarm with intermittent beep, at the same time
the display will show "AL 1" (or "AL 2") alternated to the measured pressure value.
* Three digits display, height: 12,5mm.
* Indication of pressure with decimal point
* One relay output (8A at 230 Vac)
* Two widely configurable pressure-alarms
* Setpoint locking facility
EC 3-533E 4/95
1
MOUNTING
For a proper mounting, take note of the attached indications; be sure that the conditions of use (voltage of power-
supply, environment temperature, humidity) are inside the instrument working limits.
Do not overload the relay-output, keep inside the indicated limits.
Voltage at terminal 12 is not stabilized. If the transducer is powered by the instrument, it should be verified that in all
working conditions, especially for high output signal, the voltage on the transducer does not drop below the
minimum working value, in order to guarantee a correct measure.
WARNING: The instrument is not protected from overloads; so it is necessary to give the output the suitable
protections, besides that, according to the source of power-supply, find a protection able to limit the quantity of
current absorbed by the instrument in case of failure.
CONFIGURATION
There are two levels of configuration (LEVEL 2 is protected by PASSWORD):
Level 1
Push and at the same time, for 4 seconds at least :
the symbol "PA" appear on the display
Push or to select the parameter to modify at LEVEL 1
Push and or to modify the selected parameter.
Level 2
From LEVEL 1 push or to selected the parameter "PA"
Push and or to set "-19"
Push and at the same time for 4 seconds at least :
the first parameter of LEVEL 2 will appear on the display.
Push or to selected the parameter to modify at LEVEL 2
Push and or to modify the selected parameter.
How to leave "Configuration"
Push and at the same time for 4 seconds at least or wait for 50 seconds
without operating on the keyboard, or stop and restart the instrument.
USE
In normal operating conditions the instrument displays the value read by the probe. Push to the display the actual
Setpoint value; the led "out" will flash.
To change the Setpoint value push and or .
If the parameter rA5 has value 1, the Setpoint can not be modified. After changing, release the key as last.
SIGNALS AND ALARMS
The led "out", when lighted, indicates that the output is activated; if it is flashing it indicates that the instrument is in
phase of delay-temporisation at the output.
"E0" flashing on the display and buzzer beeping intermittent means one of the following defects: probe-signal outside
the limits, defective probe or wrong connection (in case of not connected probe, the indication "E0" will appear if the
parameter is /0=30 (4-20 mA) and "0" if the parameter is /0=31 (0-20 mA)).
"E2" flashing on the display and buzzer beeping intermittent : failure of memorised configuration-data; try to switch the
power-supply off, and then, switch it on.
If the display indicates a proper value alternated to the signal "AL 1" (or "AL 2") and the buzzer beeps intermittent, it
means that the pressure read by the probe is off the limits previously set in parameters "AA1" and/or "Ab1".
EC 3-533E 4/95
2
Loading...