Mitsubishi PAC-YG60 MCA-J Service manual

Mitsubishi Electric Air Conditioner Network System
PI controller
PAC-YG60MCA
Installation/Instruction Manual
Before using the PI controller, please read this installation/instruction manual carefully to ensure proper operation.
Keep this installation/instruction manual for future reference.
Contents
Page
1. Safety Precautions.............................................. 1
2. Device Capabilities ............................................. 1
3. Confirmation of Parts .......................................... 2
4. Specifications...................................................... 2
4-1. Product Specifications ....................... 2
4-2. External View ..................................... 2
5. Example of System Configuration....................... 3
6. Installation Method.............................................. 4
6-1. Parts to be Procured Locally.............. 4
6-2. Installation Procedure ........................ 5
7. Wiring Method..................................................... 6
7-1. Names of Parts .................................. 6
7-2. Connecting the Power Line and
M-NET Transmission Line ................. 7
7-3. Connecting the Signal Lines .............. 8
(1) Pulse input (non-voltage a contact) ... 8
8. Initial Setting Procedure...................................... 9
9. Switch List......................................................... 10
10. Display Content................................................. 11
10-1. Display Content List ......................... 11
10-2. Communication Error Status
Display ............................................. 11
11. Test Run ........................................................... 12
12. Precautions for Expansion ................................ 12

1
• Before using the device, thoroughly read the following safety precautions and use as directed.
• Hazards and levels of danger that can occur due to incorrect handling are classified by the following symbols.
• After reading this manual, keep this manual for future reference. When the device is reinstalled or repaired, give this
manual to those who provide these services. When the user changes, make sure that the new user receives this manual.
This device counts pulses from a power meter, gas meter, water meter, and calorimeter.
The combined use of the G(B)-50A and TG-2000A allows for calculating the charges for each unit and performing peak-cut
operation (demand control).
.
1Safety Precautions
Warning Incorrect handling can result in death, serious injury, etc.
Caution Incorrect handling can result in injury or damage to the building or its contents.
WARNING
CAUTION
Ask your dealer or a qualified technician to install the device.
Improper installation by the user may result in electric shock or fire.
Properly install the device on a surface that can withstand the
weight of the device.
Device installed on an unstable surface may fall and cause injury.
Only use specified cables. Securely connect each cable so
that the terminals do not carry the weight of the cable.
Improperly connected or fixed cables or short-circuited cables may
produce heat and/or result in fire.
Do not make any modifications or alternations to the device.
Modifications or improper repair may result in electric shock or fire.
Consult your dealer for repair.
Properly install the device according to the instructions in this
manual.
Improper installation may result in electric shock or fire.
Have all electrical work performed by an authorized
electrician according to the local regulations and instructions
in this manual.
Power supply circuit capacity shortage or improper installation may
result in electric shock or fire. Ask your dealer or a specialist when
performing an electrical work.
Do not move or reinstall the device by yourself.
Improper installation may result in electric shock or fire. Consult
your dealer or a specialist when moving or reinstalling the device.
Do not install the device where a flammable gas leak may
occur.
If a flammable gas leaks and piles up around the device, it may be
ignited and/or explode.
Do not use the device in an unusual environment.
If the device is installed where a large amount of oil (including machine
oil), steam or sulfidizing gas is present, this environment may lead the
device to a remarkable drop in performance or damage its parts.
Do not install the device where a large amount of steam rises,
such as in the bathroom or kitchen.
Avoid installing this device where dew condensation occurs. If the
device is installed in such places, it may result in electric shock or
malfunctions.
Do not install the device where acidic or alkaline solutions or
chemical sprays are used frequently.
Doing so may lead to electric shock or malfunctions.
When installing the device in a hospital, communication station, or similar place, provide sufficient protection against noise.
An inverter equipment, private power generator, high-frequency medical equipment or radio communication equipment may interfere with the
normal operation of this device. On the other hand, the device may affect such equipment by creating noise that disturbs medical treatment or
image broadcasting.
Do not put tension on the power supply wires.
If tension is put on the wires, they may break and result in
excessive heat and/or fire.
Do not immerse the device in water.
Doing so may lead to electric shock or malfunctions.
Do not install the device where the temperature may become
more than 40°C [104°F] or less than 0°C [32°F] or it will be
subjected to direct sunlight.
If the device is installed in such place, it may result in deformation
or malfunctions.
Use standard products with the proper current capacity.
The use of non-standard wires may result in current leak,
excessive heat, and/or fire.
Do not touch the main board with hands or tools. Prevent dust
from forming on the board.
Doing so may result in fire or malfunctions.
Do not apply an AC power source. The maximum applied
voltage for the device is 24 VDC.
Using the incorrect voltage may result in device failure, ignition,
and/or fire.
2Device Capabilities
Caution: Usage Restrictions
• We take no responsibility for compensation for damages caused by reasons not attributable to us, for opportunities lost as a
result of a failure of this device or an electrical power failure on the customer or any third party site, for damages caused by
special circumstances, regardless of whether we can predict them or not, for secondary damages, for accidental damages, or
for damages to objects other than this device.
We also take no responsibility for compensation for damages caused by the customer's work, including, but not limited to,
replacement work, readjustment of machinery and equipment on the local site, and startup and trial operation.
• We take no responsibility because power volume and gas volume, etc. are converted into the pulses to be captured, and
performance, accuracy, and the like depend on meters.
• Values measured with this device cannot be used for the transaction and certification purposes mentioned in the Measurement
Law.

2
• Confirm that the box contains the following parts.
* In addition to the parts mentioned above, other parts need to be procured locally in order to operate this device. Furthermore, other Mitsubishi optional
parts may be required depending on how the device is to be used.
For details, refer to "6 Installation Method".
4-1. Product Specifications
*1: Supply electric power from a power unit for the transmission line or an outdoor unit. Furthermore, the power consumption factor of the M-NET circuitry
of this device is "1/4" (equivalent to one ME Remote Controller).
*2: Supply electric power from the main unit to the contacts of the meters.
4-2. External View
3Confirmation of Parts
Number Part Name Quantity
1 PI controller 1
2 Installation/instruction manual (this document) 1
4Specifications
Item Rating and Specification
Power Supply 24 VDC±10%: 5 W Screw terminal block (M3)
Interface
M-NET communication 17 to 30 VDC (*1) Screw terminal block (M3)
Non-voltage a contact input
Number of contacts: 4
Pulse signal: a contact
Pulse width: 100 ms to 300 ms
(Idle period until next pulse: 100 ms or more)
Rated voltage: 24 VDC
Rated current: 1 mA or less (*2)
Screwless terminal block
Environment
Conditions
Temperature Operating temperature range 0 to 40°C [32°F to 104°F]
Storage temperature range -20 to 60°C [-4°F to 140°F]
Humidity 30 to 90%RH (no condensation)
Dimensions 200 (W) × 120 (H) × 45 (D) mm / 77/8(W) × 43/4(H) × 125/32 (D) in
Weight 0.6 kg / 1 3/8 lb
Current Time
Backup during
Power Failure
If the power is cut, the internal capacitor will normally keep counting the current time for approximately one week.
(The internal capacitor takes approximately a day to charge. Replacement of a battery is not necessary.)
Installation
Environment
Inside a control panel (indoors)
* Use this product in a hotel, a business office environment or similar environment.
100 ms or more
100 ms ~ 300 ms
200
(
77 / 8
)
45
(
125 / 32
)
107.6
(
41
/
4
)
15
(
19
/
32
)
110
(
411
/
32
)
26
(
11
/
32
)
120
(
43
/
4
)
150
(
529 / 32
)
26
(
11 / 32
)
83.5
(
35 / 16
)
27
(
13 / 32
)
52
(
21 / 16
)
46.5
(
127 / 32
)
4.5
(
3
/ 16
)
harmful interference, and (2)this device must accept any interference
received, including interference that may cause undesired operation.
subject to the following two conditions: (1)this device may not cause
This device complies with Part15 of the FCC Rules.Operation is
[ 24 VDC Power Supply]
9
(
3
/ 8
)
Unit: mm (in)

3
5Example of System Configuration
Note:
• For the shield ground of the M-NET centralized control line for central control, use single-point grounding at the power unit for
the transmission line.
However, when supplying electric power to the M-NET centralized control line from the R410A series outdoor unit without using
a power supply unit for the transmission line, use single-point grounding at the TB7 of that outdoor unit.
Furthermore, when connecting this device to the M-NET indoor control line, use grounding at the TB3 for each outdoor unit
system.
• Connecting an Uninterruptible power supply (UPS) to the 24 VDC power supply is recommended in order to prevent the loss of
pulse data in the event of a power failure.
If a UPS cannot be connected, try to make the AC power supply to the 24 VDC power supply as much same as the power supply
line to the meters.
• This device does not support level meters. To use a level meter, incorporate a Converter circuit externally and convert to pulse
input.
• If this device is connected to an M-NET indoor control line and the outdoor unit is down because, for example, the power supply
is interrupted for servicing or there is a failure, the PI controller cannot be controlled from the system controller.
TB3
M-NETM-NET
LAN TB7
Centralized control line
Indoor control line
PI controller
G-50A or GB-50A
G(B)-50A Web
or TG-2000A
Uninterruptible
power supply
(UPS)
Watt-hour meter with
pulse transmitter, etc.
<Restrictions>
Maximum of 5 units (total of 20 channels) per G(B)-50A
However, the number of units that can be connected to a
G(B)-50A is up to 50 including this device, an indoor unit,
Lossnay unit, etc.
* For the number of units that can be connected when
controlling this device with TG-2000A, refer to the
instruction manual for TG-2000A.
* This figure omits the power supply line and only shows the transmission line.
Power supply unit
PAC-SC50KUA
PI controller 24 VDC
power supply
Up to 4 contacts
Watt-hour meter with
pulse transmitter, etc.
Uninterruptible
power supply
(UPS)
24 VDC
power supply
Up to 4 contacts
City Multi

4
6-1. Parts to be Procured Locally
Prepare the following parts to install this device.
[Parts to be Purchased Separately]
[Recommended Pulse Specifications]
Prepare a measuring instrument that measures the type of pulse signals indicated in table below.
6Installation Method
Required Part Specification
Unit fixing screws M4 screw × 4
Power supply for this
unit
Power source: 24 VDC 0.2 A (Minimum loading), SELV circuit, power line with grounding terminal
Ripple noise: Lower than 200 mVp-p
Compatible specification
Authorized or CE marked products
Subject to regulations: - IEC60950 (or EN60950)
- CISPR22/24 (or EN55022/24)
- IEC61000-3-2/3-3 (or EN61000-3-2/3-3)
Power line Use a sheathed vinyl cord or cable.
At least 0.75 mm² (AWG18)
M-NET transmission
line
Type of the cable: Sheathed vinyl cords or cable which comply with the following specifications or equivalent.
• CPEV Φ1.2 mm to Φ1.6 mm • CVVS 1.25 mm² to 2 mm² (AWG16 to 14)
* CPEV: PE insulated PVC jacketed shielded communication cable
* CVVS: PVC insulated PVC jacketed shielded control cable
PE: Polyethylene PVC: Polyvinyl choloride
Power needs to be supplied to the M-NET circuitry of this device. Use an outdoor unit or a separately purchased
power supply unit for the transmission line.
Signal lines
Shows the size of the electric wire (copper wire) that is adapted to the terminal block of this device.
Electric wire size ········· (1) Solid wire: Φ0.65 mm (AWG21) - Φ1.2 mm (AWG16)
(2) Stranded wire: 0.75 mm² (AWG18) - 1.25 mm² (AWG16)
Single strand: At least Φ0.18 mm
Name Model Application Remark
Power supply unit PAC-SC50KUA Power supply to the M-NET transmission line This is not required when power is to be
supplied from an outdoor unit.
Type Specifications
Output pulse relay
method Semiconductor relay method
Output pulse width
100 ~ 300 ms (100 ms and above)
Choose an instrument that outputs non-voltage a-contact
point pulse per each pulse output.
Pulse unit
Watt-hour meter: 0.1 kWh/pulse, 1 kWh/pulse recommended
Water meter: m3/pulse
Gas meter: m3/pulse
Calorimeter: MJ/pulse
* Except for the watt-hour meter, select instruments that take measurements in the appropriate pulse unit.
ON
100 ~ 300 ms

5
6-2. Installation Procedure
The PI controller PAC-YG60MCA does not have a waterproof structure.
Be sure to install the PI controller inside a control panel that is located indoors.
Prepare a control panel capable of storing this device such as the one shown in the figure. (Install the device in a control
panel strong enough to withstand a weight of 0.6 kg [13/8lb].)
This device can be installed flat or vertically. Clear the space shown below when installing.
(1) Fix the top of this unit to the control panel at two points by loosely tightening the screws (M4) that were procured locally.
Fix the bottom in place with two screws and then tighten all four of the screws.
(2) To remove the cover, as shown in the figure, remove the two screws for fixing the cover in place and then remove the cover by
unhooking the upper hook section from the lower case. To attach the cover, hook the upper hook section on the lower case and then
fix the cover in place with the two screws that were removed.
Note: The space shown above does not include space for peripherals. Additionally, the amount of space necessary varies according to
the functions that are used and the wiring method. Secure enough space appropriate for the type of installation.
Note: Two hooks are located on the upper section of the cover.
100
(
3
15
/
16
)
100
(
3
15
/
16
)
100
(
3
15
/
16
)
100
(
3
15
/
16
)
Size of the device: 200 (W) × 120 (H) × 45 (D) mm/
77/8(W) × 43/4(H) × 125/32 (D) in
Unit: mm (in)
110
(
4
11
/ 32)
150
(
5
29
/ 32)
Screw pitch
Unit: mm (in)
Hooks
Screws for fixing
the cover

6
(3) Refer to "7 Wiring Method" and connect the wires for the power line, M-NET transmission line, and input/output signal lines.
7-1. Names of Parts
PAC - SC50KUA
M-NET
NFG L-V+V
Diagram Image (Installed within a Control Panel)
* The wiring in the diagram has been simplified.
M-NET Pulse Input Power line
PI controller
Caution: 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.
24 VDC
Power
source
Junction
terminal
block
7Wiring Method
Note: Connecting an Uninterruptible power supply (UPS) to the 24 VDC power supply is recommended in order to prevent the loss of
pulse data in the event of a power failure.
CN16
SW03
SW01
SW08
SW02
SW09
SW06 SW07
LED
CN17
LED17
A / B / S
CN10 / 11 /19 / 20
V+ / V- / FG
11/ 12/ 13/ 14/ 15/ 16
M-NET
Power on
24 VDC Power Supply
M-NET
Address
Status LEDs
M-NET
Function Settings
Pulse Input
10s 1s
(CPU power on)

7
7-2. Connecting the Power Line and M-NET Transmission Line
CN16
V+/V-/FG
CN17
A/B/S
S
FG
M-NET
S / B / A
(M1)(M2)
UU
R
Tightening torque for terminal screws: 1 N·m
Connect the device to a power supply unit (PAC-SC50KUA)
for the transmission line or an outdoor unit (either a centralized
control line or indoor control line can be connected).
* Only the M-NET circuitry of this device receives the power from the
M-NET transmission line. The power consumption factor is "1/4"
(equivalent to one ME Remote Controller).
Figure 7-1 Example of Connecting the Power Line and M-NET Transmission Line
PI controller
Circuit Onsite
(example) Fuse
Varistor
Arrester
Noise
Filter
24 VDC
Power
source
AC Power Line
Uninterruptible
power supply
(UPS)
* Functional
ground
Varistor
Caution:
• Use a power line and M-NET transmission line that satisfy the specifications described in "6-1 Parts to Procured Locally".
• Attach a circuit comprising the following components to the supply primary side of the 24 VDC power supply.
(1) Varistor, (2) Arrester, (3) Noise filter, (4) Fuse
• It is important to pay attention to the polarity when connecting to the 24 VDC power supply terminal block.
Connecting the positive and negative in the reverse order will cause a failure.
• Fix the power line and M-NET transmission line in place on the outside to ensure that the terminal block is not affected by any
external force.
Not securely connecting and fixing the wires in place may cause heat generation and fire.
• Make sure that the copper wiring is not short-circuiting the plates (cover, lower case) or neighboring wires.
Cover the shielded line of the M-NET transmission line with materials such as vinyl tape and prevent short-circuiting with the
plates.
Note:
• Connecting an Uninterruptible power supply (UPS) is recommended in order to prevent the loss of pulse data in the event of a
power failure. If a UPS cannot be connected, try to make the AC power supply to the 24 VDC power supply as much same as
the power supply line to the meters.
• If this device is connected to an M-NET indoor control line and the outdoor unit is down because, for example, the power supply
is interrupted for servicing or there is a failure, the PI controller cannot be set and monitored from the system controller.

8
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".
Ch1 Ch3
C
N 1
0
/
11
/
1
9
/
2
0
Ch2 Ch4
++++
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.
Watthour
meter
Water
meter
Gas
meter
Calorimeter
Line
Onsite
Example:
24 VDC

9
After completing the procedures described in "6 Installation Method" and "7 Wiring Method", set the initial settings in
accordance with the procedure described below.
(1) M-NET address settings
(2) Use the dip switches to select functions.
Select the function required for each input channel to be used.
The switch assignment for each channel is shown below. Configure each of the settings while referring to "9 Switch List".
(3) Turn on the power of this device.
Verify that the LED16 (CPU power on) and LED17 (M-NET power on) are lit.
(4) Set the time.
Set the current time from a system controller (G(B)-50A or TG-2000A) or a Maintenance Tool.
(5) Set the meter settings so that this device is a target for control from a system controller (G(B)-50A or TG-2000A).
Configure the settings of the system controller (G(B)-50A or TG-2000A). For details, refer to the instruction manual for the G(B)-50A
or TG-2000A.
*1: 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.
*2: Values measured with this device cannot be used for the transaction and certification purposes mentioned in the Measurement Law.
8Initial Setting Procedure
SW06 SW07
Note:
• An address from 01 to 50 can be set.
• Set an address that is not the same as that of
another unit.
The address is set to "01" at factory shipment.
In the case of address "41"
10s 1s
Setting Operation Switch
Ch1 Ch2 Ch3 Ch4
Whether to use Input contact SW01-1 SW01-2 SW01-3 SW01-4
Pulse weight value SW02-1, 2 SW02-3, 4 SW02-5, 6 SW02-7, 8
Note: Be sure to configure the pulse weight settings. If these setting are not configured, the charge function and peak cut control will
not work normally because correct measurement of usage amounts will not be made.
Setting Setting with G(B)-50A Setting with TG-2000A
Pulse weight value Set the pulse weight value setting switch (SW02) to the "SC setting", and set the setting with
G(B)-50A or TG-2000A.
Unit for calculation Set the volume unit (kWh, m3, MJ) with G(B)-50A or TG-2000A.
Period of time for calculation – Set the period of time for calculation of the rates.
Time for calculation –Set the time for daily calculation.
Date for calculation –Set the date for monthly calculation.
Note:
• Configure the settings of the TG-2000A connection system from TG-2000A.
If these setting are not configured, the charge function and peak cut control will not work normally because correct measurement
of usage amounts will not be made.
• Be sure to set the pulse weight settings from this device or a system controller (G(B)-50A or TG-2000A).
If these setting are not configured, the charge function and peak cut control will not work normally because correct measurement
of usage amounts will not be made.