Omega Vehicle Security CCT-80 Series manual CCT-80, Electrical Features, Input, Output

CCT-80, ELECTRICAL FEATURES

This signal conditioner provides connection to 4- or 6-wire strain-gages (load-cells), which provide a nominal of 2 mV/V or 3 mV/V output with 350 Ω impedance. See the Connections Section.

The signal conditioner does not provides the bridge excitation voltage, therefore is necessary to use an external auxiliary power supply. It is advised that you use the model FAR-1 power supply, which senses the excitation voltage and compensates the errors due to lead resistance.

The FAR-1 provides a regulated 10 Vdc output.

The CCT-80 has an internal circuit which provides the user with tare adjust and compensation. See the tare paragraph.

INPUT

STANDARD SIGNAL	20 mV
TARE	by internal trimmer PT1, located on the "MP"
	input board

OUTPUT

0 to 20 mA or 4 to 20 mA	RL< 600 Ω max. 22 mA ±3%
0 to 10 Vdc	RL> 1000 Ω max. 11 V ±3%
ACCURACY	≤	0.2 % FS
RESPONSE TIME	≤	250 mS
GALVANIC ISOLATION	Input, Output and Power Supply are all isolated
	to 2 kVeff. 50 Hz/1 m.
GENERAL SPECIFICATIONS
RIPPLE	≤	0.5 %
BAND PASS	1.5 Hz (-3 dB)
STORAGE TEMPERATURE	-30° to +80°C
OPERATING TEMPERATURE	-10° to +60°C
TEMPERATURE COEFFICIENT	≤	0.015 %/°C
STANDARD POWER SUPPLY	115 Vac (±10%) 50/60 Hz
POWER CONSUMPTION	≤	1.5 VA
TEST VOLTAGE	4 kVeff. 50 Hz/1m.

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