YOKOGAWA OX400, Руководство пользователя

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<4. Piping and Wiring>
4-4
IM 11M10B01-01E
Table 4.1 List of Input and Output Signals
Type of Signal Terminal Marking Description Screw Wiring
Limit
Primary output terminal mA + - 4-20 mA current output M3 (*1)
Secondary output terminal V + - 0-1, 0-5, 0-10 V DC voltage output M3 (*1)
Range marker terminal RC1, RC2, RC3,
RCCOM
For auto range recognition M3
Contact input terminal PUMP OFF For pump remote ON/OFF M3 (*1)
Error contact output terminal FAIL Output in the event of an error (ERR) M3
Alarm contact output
terminal
DO Output in the event of an oxygen
concentration alarm (ALM7)
M3
Contact output terminal for
multi-selector
MS1, MS2, MS3,
MSCOM
MSI1, MSI2,
MSICOM
For measurement flow path
switching (1 to 3)
For information on flow path under
measurement
M3
*1: The current or voltage signal output cable length must be no longer than 30 m for CE use.
(1) Primary output terminal
This is a terminal to output oxygen concentration at a 4-20 mA DC current. Use it at a load
resistance of 550Ω or less. The wire shall be shielded, and the shield shall be connected to
the ground on the receive side and open on the OX400 side.
(2) Secondary output terminal
This is a terminal to output oxygen concentration in terms of voltage. Specify in advance
one of 0-1, 0-5, and 0-10 V DC. Use it at a load resistance of 10 kΩ or more. The wire shall
be shielded, and the shield shall be connected to the ground on the receive side and open
on the OX400 side.
(3) Range marker output
Range recognition information such as the auto range is expressed as a 3-bit code. This is a
non-voltage contact output signal.
• ”1” when lines between RC1, RC2, and RC3 terminals and RCCOM are closed, and “0”
when open. Range recognition information is as shown in Table 4.2. The contact capacity is
2 A/30 VDC.
Table 4.2 Output Correspondence Table of Measurement Range and Marker
Measurement Range RC3 RC2 RC1
0-10 ppm (Note) 0 0 1
0-100 ppm (Note) 0 1 0
0-1000 ppm (Note) 0 1 1
0-1% (Note) 1 0 0
0-10% (Note) 1 0 1
0-100% 1 1 0
(MANUAL fixed range) 1 1 1
(Partial range) 0 0 0
(4) Contact input terminal
This is a terminal to remotely turn on and off the internal pump using an external contact.
This is enabled only when the pump switch on the front panel of the OX400 is ON. The
pump is OFF when the contact is closed, and ON when the contact is open.
Nothing happens if the OX400 is not equipped with a pump.
(Note) Range of auto range can be changed as follows.
0-20 ppm 0-30 ppm ····· 0-90 ppm
0-200 ppm 0-300 ppm ····· 0-900 ppm
0-2000 ppm 0-3000 ppm ····· 0-9000 ppm
0-2% 0-3% ····· 0-9%
0-20% 0-30% ····· 0-90%
8th Edition : Jan. 10, 2019-00