DS Europe 500QD Series, Инструкция по эксплуатации

Страница: 20 / 31

20
8.3 ELECTRICAL CONNECTION OF AMPLIFIED LOAD CELLS:
The table lists the colours of the leads of the cable and the numbers of the pins of the
connector.
The amplified load cells are supplied by cable excepted the Series AP 7000 (models with 10
up to 100tons FS), 500QDT, 560QDT, LD, LT and LCR 200 that can be supplied also with
connector.
In order to maintain the greatest protection against electromagnetic disturbances, in relation
to CE mark, for the amplified load cells is duty for the User/Installer the grounding of the
cable screen toward the electronic side and the grounding of the metallic body of the load
cell.
Load cells with built-in analog amplifier (outputs 0 to ±5V and 0 to ±10V)
Meaning Black sheath cable Grey sheath DIN47100 cable Connector
Common
Black Brown 4
+ Power supply
Red Green 1
+ Signal
White White 2
Load cells with built-in analog amplifier (outputs 4-20mA)
Meaning Black sheath cable Grey sheath DIN47100 cable Connector
Common
Black Brown 4
+ Power supply
Red Green 1
+ Signal
Red Green 1
8.4 ZERO AND GAIN REGULATIONS:
8.4.1 Important: the gain (= span) regulation is done at the final test by DS Europe and it
cannot be regulated by the Customer.
A regulation of it changes the values of sensitivity and of calibration listed on the
"final test certificate" enclosed with the cell.
8.4.2 Wait for a warm-up period of, at least, 30 minutes before doing the regulation of the
zero and the further use of the cell.
8.4.3 The regulations of "zero" and of "gain" are by multi turn potentiometers (=
trimmers); they are reachable by screwed holes on the body of the cell, protected by
a sealing screw. (Remember the point 8.4.1).
8.4.4 The amplifier and the potentiometers are immersed in silicon gel, which is not an
handicap for the regulation. For the regulation, a screwdriver (with shank: 1,5÷2
mm) bores the gel which, by itself, closes again when the screwdriver is pulled out.