HIMA F8627X Ethernet communication card

HIMA F8627X Ethernet communication card

Technical data of product parameters

A limited current input mode is also provided in the module. A jumper is provided on the user F8627X
terminal connector for each channel, which may be used to connect the internal 250 ohm shunt
resistor into the circuit. The shunt resistor effectively provides a –40 to +40 mA current input
range. However, the input current should generally not exceed ±20 mA, to avoid self-heating F8627X
of the input resistor and a corresponding loss of accuracy. A 4 to 20 mA input corresponds to a
1 to 5 volt input to the voltage input module; therefore, the resolution of the 4 to 20 mA input
signal is approximately 10 bits binary (1 part in 1024). The resolution can be increased to
approximately 11 bits (1 part in 2048) by using a precision 250 ohm resistor in place of the F8627X
jumper. The resistor causes the voltage input module to see a 4 to 20 mA input as 2 to 10 volts.
The main power source for the module is derived from the isolated +24 VDC power supplied
by the PLC power supply. This voltage is routed through an inverter/regulator to produce the
operating voltages for the module. This module also consumes 27 mA from the +5 VDC
output of the PLC power supply. An LED at the top of the module’s faceplate is ON when the
module’s power supply is operating. The module provides electrical isolation of externally
generated noise between the field wiring and the backplane through optical isolation.

Product picture display

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