Optional Terminal Wiring - YOKOGAWA MuR10000 Manual

2.4

Optional Terminal Wiring

General Precautions to be Taken While Wiring the Input/Output Signal Wires
Arrangement of the Optional Terminals
2-8
• To prevent electric shock while wiring, ensure that the power supply source is
turned OFF.
• If a voltage of more than 30 VAC or 60 VDC is to be applied to the output
terminals, use ring-tongue crimp-on lugs with insulation sleeves on all terminals
to prevent the wires from slipping out when the screws become loose.
Furthermore, use double-insulated wires (dielectric strength of 3000 VAC or
more) for the signal wires on which a voltage of more than 30 VAC or 60 VDC is
to be applied. For all other wires, use basic insulated wires (dielectric strength of
1500 VAC). To prevent electric shock, attach the terminal cover after wiring and
make sure not to touch the terminals.
Crimp-on lug with insulation sleeves (for 4-mm screws)
• The option terminals of this instrument are specific to this instrument. Do
not connect the option terminals of the µR1000, µR1800 or other models, as
malfunction may result.
• To prevent fire, use signal wires having a temperature rating of 70°C or more.
• If a strong tension is applied to the cable wired to the recorder, the terminals of
the recorder and/or the cable can be damaged. In order to prevent tension from
being applied directly on the terminals, fasten all wiring cables to the rear of the
mounting panel.
• Use the following circuit voltage for the connection to the alarm/FAIL/status
output terminal.
• When the connection is to Mains Circuits (primary AC power source circuits):
150 V or less
• When the connection is to circuits derived from Mains Circuits (secondary
circuits): 250 V or less
(Mains Circuits voltage is less than 300 V, and connection must be used by
isolation transformer.)
As shown in the figure below, the optional terminal block is located on the rear panel.
The optional terminal block is provided on the recorder when an option that requires
input/output is installed such as the alarm output relay (/A1, /A2, or /A3 option), FAIL/
chart end output (/F1 option), remote control function (/R1 option), RS-422A/485
*
interface (/C3 option) , and Ethernet (10BASE-T) interface (/C7 option)
is screwed in place on the measuring input terminal block. A label indicating the terminal
arrangement is affixed to the terminal block.
* For details on terminal and connector arrangement and wiring, see the µR10000 /µR20000
Communication Interface User's Manual (IM 04P01B01-17E).
Terminal cover
attachment screws
WARNING
CAUTION
Optional terminal block
*
. A terminal cover
IM 04P01B01-01E