Fuji富士电机-仪器仪表操作说明书-PXE4 数字显示式温度调节器操作手册.pdf

BEFORE USE Thank you very much for purchasing Fuji’s digital controller. (1) Be sure to read this manual and grasp the concept before operating the instrument. (2) The purpose of this manual is to provide detailed information on the function of the instrument. It does not guarantee that the instrument conforms to the specific purpose of the customer. (3) No part or the whole of this manual may be reproduced without Fuji Electric permission. (4) The contents of this manual may be changed without prior notice. Note Sufficient care has been taken to assure the accuracy of this manual. Please note that Fuji Electric is not responsible for any damage, including indirect damage, resulting from an error in writing, missing information, or the use of the information described in the manual. 2 Precautions in wiring connection • For the thermocouple sensor type, use thermocouple compensation wires for wiring. For the RTD type, use a wiring material with a small lead wire resistance and no resistance differentials among three wires. • Keep input lines away from power line and load line to avoid the influence from noise induced. • For the input and output signal lines, be sure to use shielded wires and keep them away from each other. • If a noise level is excessive in the power supply, the additional installation of an insulating transformer and the use of a noise filter are recommended. Make sure that the noise filter is installed to a place such as a panel that is properly grounded. The wiring between the noise filter output terminal and the instrument power supply terminal should be made as short as possible. None of fuses or switches should be installed to the wiring on the noise filter output side because the filter effect will be degraded by such a installation. • A better anti-noise effect can be expected by using stranded power supply cable for the instrument. (The shorter the stranding pitch is, the better