3 - 81
Controller
MEE15K022
3. System remote controller
YKB/YLM 2nd
AHC enables the connection of M-NET with other systems, which was not possible with the use of ALPHA2 alone.
AHC supports the functions listed in Table 1.
Table 1 AHC function list
AHC function
Example
Supplemental Inf.
1)
Controls external devices using
the sensor data of the air
conditioning unitsconnected
to M-NET.
●
External heaters are controlled, using the
temperature sensors on air conditioning units or
on remote controllers.
By using the sensor on the air
conditioning unit connected to
the M-NET, no other external
sensors will be required.
*1
2)
Interlocks the operation of air
conditioning units and external
devices that are connected to
ALPHA2.
●
The operation of external heaters is interlocked
with the operation of air conditioning units in
heating operation.
●
The operation of external humidifiers is interlocked
with up to 16 air conditioning units. Humidifiers
will go into operation whenever at least one air
conditioning unit is in operation.
Operation status data of a
maximum of 2 groups of units
can be simultaneously collected.
Each group can contain a
maximum of 16 units.
Error status of a maximum of
50 units can be simultaneously
collected.
3)
Controls air conditioning units
that are connected to M-NET.
●
The ON/OFF operation of air conditioning units
is interlocked with the insertion/removal of a card
into or out of a card reader.
A maximum of 2 groups of units
can be simultaneously controlled.
Each group can contain a
maximum of 16 units.
4)
Allows for the combined use of
the items 1)-3) above.
●
Drying operation of air conditioning units is
controlled, using the built-in humidity sensor on
the remote controller.
5)
Monitors the input/output
status of ALPHA2 via a
remote controller or a
centralized controller.
*1 The sensor on the air conditioning unit connected to the M-NET will collect data at 70-second intervals. If a real time control at intervals
shorter than 70 seconds is required, connect a sensor to the Analog Input on ALPHA2.
Note: For detailed information about the functions supported by AHC, refer to the technical manual that came with the AHC.
(2) Field-supplied items
The following items are required to install AHC ADAPTER.
* Two types of installation options (A and B in the table below) are available for AHC ADAPTER. Select the one that
is best suited for a given environment.
[Parts to be Purchased Separately]
Name
Model
Application
Remark
Power supply unit
PAC-SC51KUA
Power supply to the M-NET transmission line
This is not required when power is to be
supplied from an outdoor unit.
Field-supplied items
Specifications
Unit fixing screw
(required when using L-fittings)
M4 x 2 pcs.
A
B
DIN rail and fixing screw
(required when using DIN rails)
DIN rail width: 35 mm (1-13/32 in)
Applicable type (IEC 60715/DIN 60715): TH35-7.5Fe, TH35-7.5Al
Functional ground wire
* Use a wire with an appropriate diameter so that the wire can be fixed with the cable
strap below the terminal block. A diameter of 10 mm is recommended.
Sleeved ring terminal
M3.5 ring terminal (for M-NET transmission cables (A, B, S))
M4 ring terminal (for functional ground wire)
Transmission cable
● CVVS Min. 1.25 mm² (Min. AWG 16)
* CPEVS: PE
*1
insulated PVC
*1
jacketed shielded communication cable
* CVVS: PVC
*1
insulated PVC
*1
jacketed shielded control cable
* Use cables with an appropriate diameter so that the cables can be fixed with the
cable strap below the terminal block. A diameter of 10 mm is recommended.
*1 PE: Polyethylene; PVC: Polyvinyl chloride
