Toshiba MCY-MUG0401HSW-E Service Manual page 65

When connecting a conductive load (e.g. relay coil) to the display relay load, insert a surge killer CR (for an AC
power supply) or a diode for preventing back electromotive force (for a DC power supply) on the bypass circuit.
Note 2: COM contact specifications
• COM terminals have DC12 V output with a basic insulation. Use a switch, such as a relay or photocoupler,
insulated from a controller (locally procured) for CO (Change-Over) contact or NO (normally-open) contact.
• DC12 V has a current-limiting resistor of 3.3k
• For non-voltage contacts, use a relay with minimum applicable load of DC12V,3mA or less.
7-2-3-4. Power peak-cut Control (Extended)
Outdoor unit
Operation
The demand request signal from the outside restricts the maximum capability (or maximum electric power) of an
outdoor unit.
L1: Power peak-cut control indication lamp
SW1: Power peak-cut control ON switch*1
SW2: Power peak-cut control OFF switch*1
*1 The inputs of SW1 and SW2 can be either pulse (100 msec or longer) or step signals.
* Be sure to provide a contact for each terminal.
Extended power peak-cut control settings
[4-stage switching] <SW105 Bit1 ON, Bit2 ON>
Control item
Input demand OFF signal to release
the demand
Input demand ON signal to control
the demand
Input demand ON signal to contral
the demand
Input demand ON signal to contral
the demand
Ω
Outdoor unit Optional PCB
interface PCB
Display
relay
CN513
SW105
ON
OFF
1 2 3 4
Bit1 OFF, Bit2 OFF
Connection cable
Optional P.C.board
Input
Display relay
SW1 SW2
OFF OFF
ON OFF
OFF ON
ON ON
*
The upper limit X%, Y%, Z% can be regulated with the outdoor DN Code (O.DN) [00E] [00F] [010].
.
L1: Display lamp ensuring power peak cut control
Locally procured
TB1
Shield wire
[OPERATION]
PJ17 TB2
COM
[ON]
ON
COM
[OFF]
OFF
Shield wire
For SW1 and SW2, be sure to provide
no-voltage contacts for each terminal.
Outdoor unit interface P.C.board
SW105
Factory default [00E] = 15,
(L1) Bit1 Bit2
[00F] = 8, [010] = 4
OFF 100% (normal operation)
ON
(upper limit regulated)
OFF ON
ON
(upper limit regulated)
ON 0% (forced stop)
64
Power
supply
L1
SW1
SW2
Demand: power peak-cut control
Outdoor DN Code [✱✱✱✱]
[00E] = X, [00F] = Y,
100% (normal operation)
Approx. 80% Approx. Z% (50% to 100%)
(upper limit regulated)
Approx. 60% Approx. Y% (50% to 100%)
(upper limit regulated)
Approx. X% (50% to 100%)
(upper limit regulated)
[010] = Z