GENERAL CHARACTERISTICS
DIGITAL P.I.D. THERMOREGULATOR
with one output
EC 4-173
* Frontal size: 48 x 48 mm.
* Power-supply: 230 Vac (standard).
* Configuration parameters accessible through Pass-
word.
* Custom configuration through keyboard (standard) or
Personal Computer (on request).
* Easy integration with remote-assistance or
remote-managing.
EC 4-173 is a digital one output P.I.D. temperature controller designed to cover a temperature range from 0 to +999 °C, meeting the needs
of a wide part of the applications of accuracy in heating field.
In factory, the instrument gets set to accept, at the input, "J" (Iron-Constantan) or "K" (Chromel-Alumel) thermocouples and is provided of a
"Auto-tuning" function activable through a key located on the front panel of the instrument, it is studied to permit the instrument to compute
the optimal value of the parameters used during the temperature regulation, in order to use them during the conclusive part of the regulation.
The SPDT relay-output can manage (up to) 8 A loads at 250 Vac and it is 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).
The flashing signals on the display have been studied in order to catch user's attention in case of not proper functioning: defective probe, temperature
outside the limits permitted by the used probe or corrupted memory-data.
The instrument is provided of one temperature alarm that can be disabled, configurable in six different ways of working; the intervention of the
alarm determines the appearing on the display of the indication "AL1" alternated to the temperature read by the probe.
* 3 digits display, height 12,5 mm.
* P.I.D. temperature regulation.
* "Auto-tuning" function studied to compute the
optimal value of the parameters used during the
temperature regulation.
* 1 widely configurable temperature alarm.
* 1 relay-output (8 A at 250 Vac).
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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 indicated limits.
Do not overload the relay-output keep inside the indicated limits.
WARNING: the instrument is not protected from overloads; so it is necessary to give the output the suitable protections.
The power-supply is protected by an internal fusible.
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 parameter 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 select 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 select 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 50 seconds at least without operating
on the keyboard (exit for time-out) or try to switch the power-supply off and then, switch
it on after 1 second at least since the last modify.
WORKING TEMPERATURE SETTING
In normal operating conditions the instrument displays the value read by the probe.
Push and release the key to display the actual setpoint value: the led "out" flashes to indicate that a procedure of setpoint setting is on run;
to change the value operate on the keys or within 4 seconds since the pressure on the key .
The exit from the procedure of setpoint setting can be obtained pushing and releasing the key or waiting 4 seconds at least without operating
on the keyboard (exit for time-out).
NOTES - the setpoint is programmable within the limits set through the parameters r1 and r2.
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SIGNALS AND ALARMS
The led "out", when lighted, indicates that the output is activated; if it is flashing it indicates that a procedure of setpoint setting is on run.
"E0" flashing on the display indicates one of the following defects: not proper kind of probe, defective probe, wrong connection or temperature
outside the limits permitted by the used probe; check the value given to the parameter /0, the functioning of the probe and the connection between
instrument and probe (the output is deactivated).
"E0C" flashing on the display indicates a cold junction compensation failure; try to switch the power-supply off and then, switch it on (the output
is deactivated).
"E2" flashing on the display indicates the failure of memorised configuration-data; try to switch the power-supply off and then, switch it on (the
output is deactivated).
"---" flashing on the display indicates that during the "Auto-tuning" function the instrument has not been able to compute some useful data for
the regulation; see "AUTO-TUNING" FUNCTION to understand reasons and remedies (the output is deactivated).
If the display shows the temperature read by the probe alternated to the signal "tun" it means that an "Auto-tuning" function is on run.
If the display shows a proper value alternated to the signal "AL1" it means that the temperature read by the probe is outside the limit programmed
with the parameter A1.
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"AUTO-TUNING" FUNCTION
The "Auto-tuning" function has been studied to permit the instrument to calculate (during the process) the optimal value of the parameters used
during the temperature regulation, in order to use them during the conclusive part of the regulation.
Before activating an "Auto-tuning" function it is possible to determine the kind of requested temperature regulation:
- P.I.D. (parameters PI and Pd > 0)
- P.I. (parameter PI > 0 and parameter Pd = 0)
- P.D. (parameter PI = 0 and parameter Pd > 0)
- P. (parameters PI and Pd = 0).
If the parameter P2 is programmed at 1, it is possible to activate an "Auto-tuning" function pushing the key for 4 seconds at least: the display
shows the temperature read by the probe alternated to the indication "tun"; the keyboard of the instrument is locked except the key .
The function is essentially based on two phases:
- an initial phase during which the instrument regulates the temperature using the data programmed before the function activation, until the reaching
of a threshold depending on the initial environment temperature where the probe has been put and also depending on the setpoint
- a final phase during which the instrument activates the output at its maximum power, it computes the characteristics of the connected load
(also according to the controlled system) and determines the optimal value of the parameter Pb (PI and Pd too, if > 0 at the moment of the
function activation).
If during the final phase the instrument has been able to compute some useful data for the regulation, the function automatically ends; in this case
the instrument continues the temperature regulation using the data computed during the final phase of the function and displaying the temperature
read by the probe.
Vice versa, if during the final phase the instrument has not been able to compute some useful data for the regulation, the display shows "---" flashing
and the output gets deactivated.
To leave this alarm condition, it is necessary to push the key for 4 seconds at least or try to switch the power-supply off and then, switch
it on: in this case the instrument restores the temperature regulation using the data programmed before the activation of an "Auto-tuning" function
(normally an "Auto-tuning" function does not have success because at the moment of its activation the environment temperature where the probe
has been put is close to the setpoint or because during the final phase some noises have happened).
NOTES - the data computed during an "Auto-tuning" function get memorised by the instrument to be restored at its following start
- an "Auto-tuning" function on run can be deactivated pushing the key for 4 seconds at least; in this case the instrument
restores the temperature regulation using the data programmed before the function activation.
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CONFIGURATION PARAMETERS
CODE PARAMETER DESCRIPTION MIN. MAX. U.M. ST.
(1) PA Password -99 100 ---- ----
/ PROBE
/0 kind of probe 10="J" TC; 11="K" TC 10 11 ---- *
(1) /1 calibration (measure offset) -1 0 +10 °C0
/2 digital filter (speed response) 0=0s; 1=0,4s; 2=1,2s; 3=2,8s; 4=6,0s; 5=12,4s; 6=25,2s 0 6 ---- 3
r TEMPERATURE REGULATOR
r1 minimum setpoint admitted 0 +999 °C0
r2 maximum setpoint admitted 0 +999 °C (2)
P P.I.D. REGULATOR
P0 offset band -99 +99 °C0
PI integral time 0 999 sec. 1 00
P2 Auto-tuning enabling 0=NO; 1=YES 0 1 ---- 1
Pb proportional band +1 +250 °C +30
Pc P.I.D. cycle time 1 1 20 sec. 3 0
Pd derivative time 0 2 50 sec. 3 5
A ALARM
A0 alarm hysteresis (differential) +1 +99 °C+1
A1 alarm setpoint -99 +999 °C0
A3 alarm disabling time since instrument power-on 0 99 9 min. 0
A4 alarm mode see TABLE 1
L NETWORK CONNECTION
L1 instrument address 1 15 ---- 1
L2 instrument group 0 7 ---- 0
L3 time-out link 2 25 0 sec. 7
L4 baud rate 0 3 baud 1
NOTES
(*) = depends on the kind of probe.
(1) = configuration parameter present on Level 1.
(2) = for "J" thermocouples r2 = 700 °C; for "K" thermocouples r2 = 999 °C.
TABLE
parameter A4 alarm mode
1 disabled
2 absolute minimum alarm
3 absolute maximum alarm
4 minimum alarm relative to setpoint
5 maximum alarm relative to setpoint
6 minimum alarm relative to setpoint
with automatic enabling and recompute
7 maximum alarm relative to setpoint
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with automatic enabling and recompute
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SIZE AND PIERCING TEMPLATE
MOUNTING
With U-bracket.
The panel thickness will be
between 1 and 5 mm.
Measure in mm.
ELECTRICAL CONNECTIONS
Example of typical application.
ELECTROMECHANICAL CHARACTERISTICS
Case: self-extinguishing plastic (PPO) black, according to
Size: 48 x 48 x 95 mm.
Mounting: panel mounting with U-bracket.
Environment
temperature: from 0 to +60 °C.
Humidity: 10 ... 90% not condensing.
Connections: extractable screw connectors.
Power-supply: 230 Vac 50-60 Hz 2 VA (standard);
Insulation class: II (only with ac power-supply).
Inputs for measure: 1 configurable for "J" or "K" thermocouple.
Range of measure: from -99 to +700 °C ("J" thermocouple);
Range of regulator
programming: from 0 to +999 °C.
Display: 3 digits display, height 12,5 mm;
Resolution: 1 °C.
6
UL94 V-0.
others on request.
from -99 to +999 °C ("K" thermocouple).
output status indicator.
EVERY CONTROL S.r.l. - Via Mezzaterra 6 - 32036 Sedico - BELLUNO - ITALY
Phone +39 437 852468 (3 a.r. lines) - Fax +39 437 83648
Outputs: 1 SPDT 8 A/250 Vac relay (K 1).
Serial port for data
exchange: TTL with EVCOBUS protocol (on request).
PRODUCTS LINE '96
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