YOKOGAWA RC400G, Руководство пользователя

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<6. Converter Operating Functions>
6-4
IM 12F4A1-01E
6.2 Analog Output Signal
Analog output signal is either 4 to 20 mA DC or 1 to 5 V DC corresponding to output range
spans. Their selection is performed by changing PCB jumper pin connection in the converter. On
shipment, either one that was required by the user has been set.
If change is required, contact Yokogawa because service work is required to be conducted for
removing the control panel.
Analog outputs can cover -10 % to 110 % of the span in the output range for bath 4 to 20 mA DC
and 1 to 5 V DC (“output range-1” and “output range-2”).
The load resistance is 550 Ω or less for 4 to 20 mA DC output and 300 Ω or less for 1 to 5 V DC
output.
6.3 Contact Output
The converter is provided with a function which outputs these types of volt-free contact signal
shown in Table 6.1.
Table 6.1 Converter Contact Output Function
Application Wiring Terminal Names
Contact Status
At Power OFF De-energized Energized
<failure> contact signal
<maintenance> contact signal
<Range> contact signal
F1, F2 (FAIL)
M1, M2 (MAINT.)
SUB OUT
Open
Closed
Open
Closed
Open
Open (*)
Open
Closed
Closed (*)
*1: De-energized status: Range 1, energized status: Range 2
The contact signal <maintenance> in Table 6.1 is output in modes other than <MEAS.> mode.
Table 6.2 shows contact ratings of relays for contact output. Contact loads which satisfy any of
these conditions to the wiring terminals.
Table 6.2 Contact Ratings of Relays for COntact Output (Resistive Load)
Item DC Load AC Load
Max. permissible power
Max. permissible voltage
Max. permissible current
60 W
220 V
2 A
125 VA
250 V
2 A
6.4 Contact Input
The converter is provided with a function which receives one type of contact signal input shown in
Table 6.3 and executes action in response to the signal requirement.
However, only the contact signal “<remote> range selection” is used for the RC400G residual
chlorine analyzers of standard specifications.
Note: For <remote> range selection action, see subsection 5.3.4 (10).
Table 6.3 Converter Contact Input Function
Application
Connection
Terminal
Names
Contact Input Judgment
OFF ON
Range selection <remote> RANGE Input resistance 100 k W or more Input resistance 200 W or less
14th Edition : Jul. 15, 2020