Panasonic CZ-256ESMC2 Operation Manual page 50

16 Installation (Electric) and Service Instructions
3
Wiring
Always shut off the power supply (breaker) before installing or uninstalling.
(1) Power supply connection
Connection terminals
Connect the power supply to the commercial power mains
(100 to 240 V AC), using a dedicated circuit.
Connect the power supply lines to the L and N power supply
terminals (the power supply neutral to the N terminal).
Connect an earth ground line to the
100-240V~
terminal.
Attach the power supply terminal board cover.
Firmly secure the power lines using the supplied cable tie.
Power connector (2) Signal connection
panel
Connect indoor and outdoor signals using 0.5 - 2.0 mm
Communications two-conductor cable.
connector panel
Overall length of each signal line should be 1 km or less.
Use the shielded wire for inter-unit control wiring.
Do not run signal lines through the same conduit as
power supply lines, use the same cable as the power
supply, or run close to the power supply lines (maintain
at least 30 cm separation, if cabled outside the control
box).
Do not run the LINK1 and LINK2 signal lines through the
same conduit, use the same cable for wiring, or run the
signal lines close together.
Earth the shield wire of the Inter-unit control wire (U1-U2).
Terminal names and uses
ADAPT +/- : Communication adaptor control wire (RS-485)
LINK 1/2 : Inter-unit control wire (HBS)
P1 : Pulse meter input (Gas flow meter, fuel meter)
P2 - 3 : Pulse meter input (Electricity meter)
DI 1 : All stop input
DI 2 : All start input
DI 3 : reserved
DO 1 : All alarm output
DO 2 : All operation output
Basic wiring diagram
Wire up the communication adaptor control wire and Inter-unit control
wire as shown in the gure below.
Intelligent Controller
Inter-unit control wire
Communication
adaptor control
wire
Communication adaptor
Inter-unit control wire
W
G
G: Gas flow
meter
W: Electricity
meter
* When connecting link systems (inter-unit control wires), always connect
beginning with LINK1 and LINK2 on the Intelligent Controller. Up to 4 link
systems can be connected.
100
power supply
Power supply terminal
2 board cover
Cable tie
Use this screw when connecting the shield
for the Inter-unit control wiring to ground.
Wiring procedure
Inter-unit control wire (no polarity)
Connect signal terminals 0 and 1 (LINK1) to the Inter-
unit control wire terminals of an indoor or outdoor unit.
If using two link systems for connection, connect signal
terminals 3 and 4 (LINK2) in the same manner.
Communication adaptor control lines (note + and -
polarity)
Up to seven external communication adaptors can be
connected to the control unit (see gure at left). However,
a maximum of four links is supported. Be sure to follow
the communications adaptor Installation Instructions
when connecting the adaptors. Make sure that power
lines are not connected to the communication adaptor
terminals or Inter-unit control wire terminals.
* If the power voltage is accidentally applied to the Inter-
unit control wire terminals, a fuse will blow to protect the
controller board. If this happens, disconnect the power
line, and connect the Inter-unit control wire to the spare
U2 terminal. (The other signal line can stay connected to
the U1 terminal.) The spare U2 terminals are right next to
the main U2 terminals.
Use terminal 2 (LINK1-U2) instead of terminal 1
Use terminal 5 (LINK2-U2) instead of terminal 4
16 Installation (Electric) and Service Instructions
4
Connecting to external equipment
(1) External system inputs (2) External system outputs
(no-voltage contact point static) (no-voltage contact point static)
Equipment
(Output common)
All stop input DI 1
All alarm output
DI 2
All start input
All operation output
(reserved) DI 3
Keep the input and output signal line lengths to under 20 meters. For distances greater
than this, install a standalone communication adaptor, or use a relay.
For use in areas that may be susceptible to electrical noise, use two-conductor
shielded cable (with one line grounded), with a cross-section of 0.5 mm
Do not apply external voltages to the input terminals.
The input terminals use a sensing current of about 10 mA at 5 V DC.
The output terminal allowable contact voltage and current are 30 V DC, 0.5 A.
5 Power switch 6 Circuit board diagram
The Intelligent Controller has a power switch.If the
LCD is blank after connecting power, check the
position of the power switch.
Power
supply
terminals
POWER
Power
1
switch
OFF ON
Power supply
terminals
* Ordinarily, there is no need to change any settings on the Intelligent
Controller board.
7 Verify the system con guration, make necessary settings
1 Turn on power to all air conditioner units.
2 Turn on power to the Intelligent Controller.
3 Set the date and time on the Intelligent Controller and verify the system con guration.
4 Following the display on the Intelligent Controller, verify the number of units connected.
5 Perform the necessary settings. Be sure to set the central control address.
* See the Operation Manual for details.
8 Educating the customer
Give the Operation Manual to the customer.
Explain the operation to the customer, following the explanations given in the Operation Manual.
101
(3) Pulse meter inputs
(no-voltage contact point pulse)
Equipment
Gas flow meter
P1
(Fuel flow meter)
*1
Electricity meter 1
P2
P3 Electricity meter 2
*1 Factory default setting (alterable)
2 or greater.
Minimum pulse width 100 msec
Minimum pulse interval 1 sec
7-segment LED
Home key
Up / down /set keys
S 6 D1 S7 S8 S 9
HOME D2 UP DOWN SET
Termination resistor
jumper for
communication
adaptor control wire
S1 CN2
100-240V~
3
10 19
0 9
CN1
P o w r e s w c t i h S g i n a t l r e m n i a s l