Mitsubishi Electronics PAC-YG60MCA instruction manual Connecting the Signal Lines

7-3. Connecting the Signal Lines

•Separately procure items such as terminal blocks and cables locally.

•The maximum wire length is 100 m. However, since the use of long wires makes the device susceptible to noise, using wires shorter than 10 m is recommended.

(1)Pulse input (non-voltage a contact)

*To use these, various settings need to be configured. Refer to "8 Initial Setting Procedure".

24 VDC

	CN 10	/	11	/	19	/	20
	Ch1		Ch2		Ch3			Ch4
+		+		+			+

Line

Example: Watthour Water Gas Calorimeter Onsite

meter meter meter

Note:

•The pulse weight can be added to each of the inputs of channels 1 to 4.

For details, refer to "9 Switch List".

•This device does not support level meters.

To use a level meter, incorporate a Converter circuit externally and convert to pulse input.

Caution:

•The polarity of the input terminals is important, so be sure to match the polarity when using contacts that have polarity.

•Select a contact with a minimum applicable load of 1 mA or less.

•Supply 24 VDC 1 mA from the positive terminal to the contacts of the meters.

•The pulse unit of the watt-hour meter being used should be 1 kWh/pulse or less. Note that the apportioning error will increase if a watt-hour meter with large pulse unit is used.

•Strip 12±1 mm (15/32 ±1/32 in) of the wire coating and insert firmly into the terminal.

•Make sure that the copper wiring is not short-circuiting the plates (cover, lower case) or neighboring wires.

•Perform wiring so that the terminal block is not strained.

If strained, use a wire guide or junction terminal to alleviate the stress on the terminal block.

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