LPP420, 3 3/4 digit LCD panel instrument - COMADAN - #1

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LPP420, 3 3/4 digit LCD panel instrument - COMADAN
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LPP420, 3 3/4 digit LCD panel instrument - COMADAN


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C-mac
3 3/4 digit LCD panel instruments
LPP420: Loop powered, range 4-20 mA.
GP422: Supply voltage 9-35 VDC / 6-25 VAC, 3 ranges.
LCD display with yellow backlight.
Easy range adjustments with push-buttons.
Made in accordance with the C £ and EMC regulations
LPP420 and GP422 are 3 3/4 digit instruments (+/-3999) with backlit LCD display. The displays have a very large contrast, which makes them very suitable in panels where the ambient light is high.
Technical data:
Supply voltage GP422:9-35 VDC / 6-25 VAC
The supply voltage is galvanically isolated from the internal
electronics.
Connections and calibration
SETUP
pen
SET MIN DISPLAY (Lo) SET MAX DISPLAY (HI) SET D.P. POS. (dP) SET CALIB. MODE (CAL) SET NE43 MODE (nE43)
BBQBB
■I
pro
3 4
Metering ranges: Input protection: Input impedances:
0-1 V, 0-10 V and 0-20 mA.
35 VDC (all ranges)
1V:>10MQ, 10V: >110kQ
BBBBy
DOWN UP
1 2345
UP + DOWN: DISPLAY = 0
20 mA: typ. 50 Q
Loop voltage, LPP420: <3,7 V, normal light intensity <5,7 V, increased light intensity
(Example LPP420)
Operating temp.: Humidity: Protection: Temp.coefficient: Linearity: Display reading: Overload indication: Connections:
-10°Cto+60°C
0 - 90% RH, non-condensing
IP 44
<0,015%FS/°C <0.05% FS
+/- 3999
display shows " "or"____"
screw terminals, max. 1,5 □ mm.
Calibration procedure, general:
Select calibration parameter by setting SETUP switch 1-5 ON.
Display shows HOLD and the selected function for 2 secs.
Enter the wanted value with the UP and DOWNbuttons.
Set SETUP switch OFF, backlight flashes and HOLD display
extinguishes.
Range adjustment, calibration mode ON (LPP420 only): Connect any current signal between 4 and 20 mA to the instrument.
Set switch 1 ON, and enter the wanted display reading for 4 mA input.
Set switch 2 ON, and enter the wanted display reading for 20 mA input.
Range adjustment, GP422 and LPP420, cal. mode off: Connect minimum input signal, f.inst. 4 mA to the instrument. Set switch 1 ON, and enter the wanted display reading for min. input.
Connect maximum input signal, f.inst. 20 mA to the instrument. Set switch 2 ON, and enter the wanted display reading for max. input.
Select input type, (switch 4, GP422 only): 1:0-20mA(A) 2:0-10V(10U) 3:0-1V(1U)
Select contrast, (switch 5, GP422 only): Selection 0-7, 0 = min. contrast, 7 = max. contrast
NE43 mode, (switch 5, LPP420 only):
ON: display shows "---- " if input signal out of range.
OFF: display shows the actual value if possible.
48 x 48 mm, depth 67 mm
Mech. dimensions:
EMC and safety regulations.
Emmision: EN 50 081 -1
Immunity: EN 50 082 - 2
Safety: EN 60 730
Approvals: The units are produced in accordance with the CE and low voltage regulation Block diagram, LPP420:
LIGHT LEVEL
II_
T
INPUT PROTECTION / SUPPLY
Signal
A/D
MCU
-4 0 I
DOWN UP
f Comadan V Produktion a/s
1 Q

pageCatalog pdf di En 2012-05-21-22