Siebe Climate Controls EWLP 120 User Manual

GENERAL DESCRIPTION

The EWLP 120 data recorder is an elec­tronic device designed to measure temper­ature, humidity or pressure from two
different locations.
Due to the use of a microprocessor it can
store up to 1600 reading points, with user
programmable storage intervals. Stored
data can be printed with messages in sev­eral languages.
The instrument can be connected to PTC
or Pt100 probes; alternatively the current
input port can be used for pressure or hu­midity. It is available in a 161x192 mm ABS
plastic case, 94 mm deep.

COMMANDS ON FRONT PANEL

(response to key pressure is delayed by
approximately 0.5 seconds).

RECORDING 1

The pressure of this key starts recording
related to sensor n. 1; the related led turns
on and the display indicates the value read
by probe 1.
A further key pressure stops recording re­lated to sensor 1; the related led turns off
and the display indicates the value read by
the probe of sensor 2, when enabled, oth­erwise the OFF message is displayed.

RECORDING 2

The pressure of this key starts recording
related to sensor n. 2; the related led turns
on and the display indicates the value read
by probe 2.
A further key pressure stops recording re­lated to sensor 2; the related led turns off.
When the two probes are set to STAND BY
(disabled data recording) the display indi­cates the OFF message.
When both probes are enabled (enabled
data recording) the led on indicates the

zone whose value is displayed, the blinking
reminds that the related zone is enabled for
recording.

CLEAR

The key pressure after print clears from
memory the recordings related to the re­port printed and enables the recording
again.

PRG

When held pressed for 3 seconds in
STAND BY (OFF message displayed) with
no stored data it allows to enter or exit pa­rameters programming mode. In case
stored data are present, the display shows
the ErPr alarm code.

MUTE

The key pressure in data recording allows
to silence the alarm by disabling the relat­ed relay; the code on the display will con­tinue to show the alarm presence.

▲ (UP)

When pressed in programming mode it al­lows to skip to the following parameter or
increase its value. In recording mode it se­lects to display the value related either to
sensor 1 or sensor 2.

▼ (DOWN)

When pressed in programming mode it al­lows to skip to the following parameter or
increase its value. In temperature recording
mode it selects to display the current time.

LABEL/VALUE

When pressed in parameters programming
mode it allows to switch from the parame­ter label display to its value, and vice-ver­sa.

PRINT

The key pressure starts the printing of
recorded data; while printing the display
shows letter P (print), recording is sus­pended and all keys are disabled.

HOW IT IS MADE

WHAT IT IS

EWLP 120 is a data recorder capa­ble to measure temperature, humid­ity or pressure from two different
locations.
It is provided with a micro gate in­put and a relay for alarm signal con­trol.

EWLP 120

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temperature recorder

• Size: 161x192 mm, depth 94 mm

• Housing: ABS plastic

• Mount: wall mount through special
fixing holes

• Protection grade: IP65

• Connections: screw terminal block

• Storage: on non-volatile memory ­capacity 1.600 readings

• Printer type: 24 columns with 7x5
matrix on thermal non-photo sen­sitive paper, paper width 57 mm

• Outputs: on relay (in exchange) for
external alarm repetition

• Inputs: 2 PTC or PT100 tempera­ture probes; the second input can
be matched with a humidity or
pressure input. One input for micro
gate and one for backup battery

• Resolution: 0.5 °C, 0.5 Bar and

0.5 %RH

• Accuracy: 0.5 °C, 0.5 Bar and

0.5 %RH

• Power supply: 230 Vac

At the end of print the display shows the
messages OFF and “Prnt” (print) alterna­tively; a further key pressure repeats the
print while the pressure of key CLEAR rubs
all data from memory and restarts data
recording.

FEED

The pressure of this key allows to move the
paper forward.

PARAMETERS PROGRAMMING

Hold the “PRG” key pressed for 3 seconds
in STAND BY mode (OFF message dis­played) and no data stored; the display
shows the first parameter (Po1). The pres­sure of the “UP” (or “DOWN”) key while in
programming mode allows to skip to the
following (previous) parameter or increase
(decrease) its value. The pressure of key
“Label/Value” while in parameters pro­gramming mode allows to switch from pa­rameters label display to value display and
vice-versa. Hold button “PRG” pressed for
3 seconds to exit programming mode.
WARNING: new values are only stored
when programming mode is exited. Check
time indicated by parameters Po1 and Po2
to control the clock.

PARAMETERS DESCRIPTION

Po1: minutes setting (01…59).
Po2: hours setting (00…23).
Po3: weekday setting:

1 = Monday;
2 = Tuesday;
3 = Wednesday;
4 = Thursday;
5 = Friday;
6 = Saturday;
7 = Sunday.

Po4: month day setting (01…31).
Po5: month setting (01…12).
Po6: year setting.
Po7: setting of the instrument recognition

code (4 digits maximum); this code ap­pears as heading on every report.
Po8: data storage interval setting; values
from 1…240 minutes (default 30 minutes).
Po9: maximum alarm value setting for sen­sor n. 1; when the threshold is exceeded
after the delay time set through parameter
Po14, the alarm relay is triggered and the
alarm value related to letter P is printed if
the print is enabled through parameter
Po13.
Po10: minimum alarm value setting for
sensor n. 1; when the threshold is exceed­ed after the delay time set through para­meter Po14, the alarm relay is triggered
and the alarm value related to letter N is
printed if the print is enabled through para­meter Po13. The value of this parameter
shall be lower than or equal to P9; other­wise the negative set will be set to P9
when programming mode is exited.
Po11: maximum alarm value setting for
sensor n. 2; when the threshold is exceed­ed after the delay time set through para­meter Po14, the alarm relay is triggered
and the alarm value related to letter P is

printed if the print is enabled through para­meter Po13.
Po12: minimum alarm value setting for
sensor n. 2; when the threshold is exceed­ed after the delay time set through para­meter Po14, the alarm relay is triggered
and the alarm value related to a symbol is
printed if the print is enabled through para­meter Po13.
The value of this parameter shall be lower
than or equal to P11; otherwise the nega­tive set will be set to P11 when program­ming mode is exited.
Po13: print enabled in case of alarm (de­fault 0) where:
0 = alarm print disabled;
1 = print enabled for maximum alarms only
(Po9 - Po11);
2 = print enabled for minimum alarms
only(Po10 - Po12);
3 = print enabled for minimum and maxi­mum alarms (Po9 - Po10 - Po11 - Po12).
Po14: alarm delay time and open door set­ting; values from 1…60 minutes (default 30
minutes).
Po15: allows to change the value read by
probe n. 1; values from –5…5 (default 0).
Po16: allows to change the value read by
probe n. 2; values from –5…5 (default 0).
Po17: language selection for printed mes­sages (default 1):
1 = Italian;
2 = English;
3 = French;
4 = German;
5 = Spanish.
NOTE: the measurement unit related to
probe n. 2 is automatically selected (°F or
%RH or Bar) according to the configuration
of dip switch KD1.

ALARM CODES

EE01: memory error - possible loss of all
set data, alarm relay triggered and data
recording stopped. After this alarm print
the recorded data - that could be wrong ­and at the end of the report the message
“LOST RECORDS - CHECK PARAME­TERS” will be printed.
Device check procedure: enter program­ming mode and check the set parameters;
if they correspond to those previously set,
change one parameter; in case the alarm is
still present when exiting programming
mode, contact an authorised servicing
centre otherwise re-enter programming
mode and correct previously changed
data.
FULL: full memory. The alarm relay is trig­gered. The recorded data need to be print­ed. 100 more recordings are available in
the device since the alarm appears. When
the memory is full recording continue over­writing the first recorded data. At the end
of print the message “PARTIAL RECORD­INGS DUE TO FULL MEMORY” will be
printed.
EndP: paper missing: slightly open the
side pads, extract the paper support. To in­sert a new paper roll fit the support be-

tween the two pads with a light pressure.
Then insert the paper into the upper slot
and load it using the FEED button.
If this alarm occurred while printing, press
the PRINT key to restart the report, that will
begin from day on which it was interrupted.
ALP1: alarm related to probe n. 1 and
alarm relay triggering. On the report the
alarm occurrence will be indicated by the
following symbols:
Z (zone 1 or 2), SET, * to indicate the alarm,
NEG (negative) and POS (positive).
When the measured temperature exceeds
the range defined through parameters Po9
and Po10 for more than the time set
through parameter Po14, the alarm code is
displayed. Such code is automatically re­called as the temperature returns within the
range.
ALP2: alarm related to probe n. 2 and
alarm relay triggering. On the report the
alarm occurrence will be indicated by the
following symbols:
Z (zone 1 or 2), SET, * to indicate the alarm,
NEG (negative) and POS (positive).
When the measured temperature exceeds
the range defined through parameters
Po11 and Po12 for more than the time set
through parameter Po14, the alarm code is
displayed. Such code is automatically re­called as the temperature returns within the
range.
ErP1: probe n. 1 faulty and alarm relay trig­gering; replace the faulty probe; instead of
the value message “--.-” will be printed,
while the display will show message ErP1
and “--.-” alternatively.
ErP2: probe n. 2 faulty and alarm relay trig­gering; replace the faulty probe; instead of
the value message “--.-” will be printed,
while the display will show message ErP2
and “--.-” alternatively.
ErCL: clock module faulty, alarm relay trig­gering, the instrument is automatically set
to OFF and recordings interrupted; the dis­play shows alarm information ErCL and
OFF alternatively; if the ▼ key is pressed to
display the current time the display indi­cates “- -”. After this alarm print the record­ed data; at the end of the report the
message “CHECK PARAMETERS FOR
CLOCK ERROR” will be printed. Device
check procedure: enter programming
mode and check the parameters set by
Po1 to Po6; if they correspond to those
previously set, change one parameter; in
case the alarm is still present when exiting
programming mode, contact an authorised
servicing centre otherwise re-enter pro­gramming mode and correct previously
changed data.
Erdr: door open for a time exceeding pa­rameter Po14; alarm relay triggering. The
alarm stops automatically as the door is
closed.
ErPr: alarm code informing that no new
value can be set for parameters as data are
already stored in memory. The following
process shall be performed to change pa­rameters: put the instrument in place and

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