Mitsubishi Electric PURY-WP-YJM-A, Data Book

Page: 148 / 220

3. System remote controller
3 - 63 CONTROLLER
Controller
(2). Connecting the Signal Lines
• Separately procure items such as terminal blocks and cables locally.
• The maximum wire length is 100 m (328 ft).
However, since the use of long wires makes the device susceptible to noise, using wires shorter than 10 m (32.8 ft) is recommended.
1) Pulse input (non-voltage a-contact)
NOTE
• The pulse unit (weight) can be added to each of the inputs of channels 1 to 4.
• Be sure to set the pulse unit (weight) settings from a system controller (AG-150A/GB-50ADA or TG-2000A).
If the pulse unit (weight) value has not been set as required, the charge function and peak cut control will not
work normally because correct measurement of usage amounts will not be made.
• 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.
• The input signal line should not come into contact with or be installed alongside the M-NET transmission line
and power supply line. Care must also be taken to avoid wiring loops.
• 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.
3. System Operation Test
Various settings related to the charge operation need to be configured from the TG-2000A prior to starting the charge function operation.
Furthermore, in such a case, be sure to perform a charge test run according to the instruction manual for TG-2000A.
Do not turn the power OFF after starting operation. The power rate will not be counted while the power interruption.
Forcible pulse input must never be carried out after startup.
Ch1 Ch3
CN 10 / 11 / 19 / 20
Ch2 Ch4
+ + + +
Water
meter Gas
meter Calorimeter
Field
Connections
Example: Watthour
meter
24 VDC
Device side