GRAPHTEC WR300 - Connecting to a DC Power Supply

Checks and Preparation
2-19
Connecting to a DC Power Supply
Use the DC power cable supplied with the recorder when connecting the WR300/310 to a DC power supply.
Connect the red, orange, yellow, brown, and green leads of the RIC-140 DC power cable to the + terminal of
the external DC power supply, connect the black, gray, white, navy blue and sky blue leads to the - terminal
of the external DC power supply, and connect the black and white lead to the GND terminal of the external
DC power supply. There are five leads each for connection to the + and - terminals, so be sure to connect all
the leads.
GND
DC power cable
External DC power supply (+12V)
DC power cable
Red, orange, yellow, brown, and green leads
Black, gray, white, navy blue, and sky blue leads Shielded lead (black & white)
GND .................................... Use this lead when a common GND level with other devices is required.
76
2
1
8
910
5
4
3
DC-LINE DC-POWER DC-FUSE
+ : 1, 2, 3, 4, 5
—: 6, 7, 8, 9, 10
DC-LINE.............................. This is the DC power supply cable connector.
DC-POWER ........................ This is the DC power switch.
DC-FUSE ............................ This is the fuse for the DC power supply.
(1) Connect the DC power cable's output end to the WR300/310's DC-LINE power supply connector.
RIC-140
(2) Connect the DC cable's input end to the DC power supply.
(3) When the recorder's DC-POWER switch is turned on, power is supplied.
CAUTION
Make sure that the DC-POWER switch is in the off status before connecting the recorder to a power supply.
CHECKPOINT
• Because a maximum current level of 20 A or more may flow through the cable in some cases, use of a DC power
cable that has a small diameter or is longer than 1.5 meters may result in overheating which is extremely dangerous.
When connecting the recorder to an external power supply, be sure to use the DC power cable provided.
• Before running the recorder using a DC power supply, be sure to ground the protective ground terminal ( ) to
avoid electrical shock and fire hazards. For grounding, use a ground wire of at least 0.75 mm
2
. When using the
recorder in an environment where grounding is not possible, ensure that the voltage to be measured is no greater
than 50 V (DC or rms).