HWA-LAN_connection-GB

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1XPEHUQRIXQLWVWKDWFDQEHFRQQHFWHG n = 4
1XPEHURIFRPSUHVVRUVIRUHDFKXQLW: n_comp
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• unit 1 is the master of the system and the other are slave units
• total cooling steps = n x n_comp
o
o
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• LAN alarm : if a LAN problem is detected, each unit will operates independently
• Unit alarm: if a unit have a serious alarm it is disconnected from the LAN
• function to avoid contemporaneous start-up of the compressors of the unit connected.
• rotation of the compressors
• rotation of the units set by parameter
([DPSOH - 2 units connected
- 2 compressor for each unit
- total cooling steps = 4
- Setpoint MASTER (unit 1) = 12°C
- Differential band MASTER (unit 1) = 4°C
Unit 1 (Master)
Unit 2 (Slave)
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File:HWA_LAN_connection_rev.01.doc
Date: 14/02/2003
Page 1 di 5
81,70$67(5
UNIT 1
Cooling
capacity
100%
50%
0%
12.8
13.6
14.4
Setpoint
16
Setpoint +
differential
T inlet
MASTER
(Unit 1)
81,76/$9(
UNIT 2
Cooling
capacity
100%
50%
0%
12
13.6
14.4
15.2
Setpoint
Setpoint +
differential
T inlet
MASTER
(Unit 1)
727$/6<67(0
System
Cooling
capacity
100 %
75%
50%
25%
0%
12.8
13.6
14.4
15.2
Setpoint +
differential
Setpoint
File:HWA_LAN_connection_rev.01.doc
Date: 14/02/2003
T inlet
MASTER
(Unit 1)
Page 2 di 5
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&RQQHFWLRQW\SH serial line
&RQQHFWLRQFDEOH two wires + shield AWG22-24
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For the configuration of the address of the pCO1 follow these steps:
- connected the pCO1 with a display wich the address configure to 0 (all dip-switches set to OFF)
- switch ON the power supply pressing simultaneously the ALARM and the UP keys.
- press UP or DOWN key to set the address.
- press ENTER key to save and exit from this procedure.
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Open the cover in the backside of the display and configure the dip-switches inside following the
addresses table 3.3.
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5
8QLW
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6
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7
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-
32
File:HWA_LAN_connection_rev.01.doc
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Date: 14/02/2003
Page 3 di 5
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• Press UP + ENTER + DOWN keys contemporaneously for 5 seconds, and the following screen appears:
+--------------------+
|Display address
|
|setting..........:05|
|
|
|I/O Board address:01|
+--------------------+
← Select the address of the microprocessor that you want to configure
• Press ENTER key and the following screen appears
+--------------------+
| Terminal config
|
|
Press ENTER
|
|
to continue
|
|
|
+--------------------+
• Press ENTER key and the following screen appears
In this screen it is necessary to configure the addresses and the functional mode of the display (terminal)
connected to the microprocessor. Note that to one microprocessor can be connected a maximum of 3
displays (terminals Tmr1-2-3). Press ENTER key to move the cursor into the fields and UP or DOWN keys to
modify the value.
Microprocessor address
↓
+--------------------+
|P:01 Adr Priv/Shared|
|Tmr1 05
Pr
|
|Tmr2 32
Sh
|
|Tmr3 None -- Ok?No |
+--------------------+
← Functional mode of the display: Pr = Private, Sh = Shared
← Change “No” to “Yes” to confirm the modification
↑ Display addresses
• Private display: if a display is private, it can be managed by only one microprocessor.
• Shared display: if a display is shared, it can be managed by more than one microprocessors; in this case
it is possible to switch the managed microprocessor pressing contemporaneously ESC + DOWN keys.
• To confirm the modification, change to Yes the parameters near Ok?.
• Display configuration examples:
Description: 2 unit with 2 private displays
pCO of unit 1
+--------------------+
|P:01 Adr Priv/Shared|
|Tmr1 05
Pr
|
|Tmr2 None -|
|Tmr3 None -- Ok?No |
+--------------------+
pCO of unit 2
+--------------------+
|P:02 Adr Priv/Shared|
|Tmr1 06
Pr
|
|Tmr2 None -|
|Tmr3 None -- Ok?No |
+--------------------+
Description: 2 unit with 1 private display and 1 shared displays
pCO of unit 1
+--------------------+
|P:01 Adr Priv/Shared|
|Tmr1 05
Pr
|
|Tmr2 32
Sh
|
|Tmr3 None -- Ok?No |
+--------------------+
File:HWA_LAN_connection_rev.01.doc
pCO of unit 2
+--------------------+
|P:02 Adr Priv/Shared|
|Tmr1 06
Pr
|
|Tmr2 32
Sh
|
|Tmr3 None -- Ok?No |
+--------------------+
Date: 14/02/2003
Page 4 di 5
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• Enabling the Lan function: set to Y the parameter in the following screen of the User Menu (Password =
100) in all units.
M_Lan_01
+--------------------+
|LAN enable:
Y |
|
|
|
|
|
|
+--------------------+
• Configure the Lan function: in the master unit (unit with address = 1) set
o The number of units connected
o The rotation time
o The lan alarm delay
o The master control function: to use the master inlet temperature for the regulation of the
compressor of all units.
M_Lan_01
+--------------------+
|LAN enable:
N |
|Units number:
2 |
|Rotaz.time:
|
|
024 hrs|
+--------------------+
M_Lan_02
+--------------------+
|LAN alarm delay:
|
|
060 s|
|Master control: N |
|
|
+--------------------+
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• Lan status: in the main screen from the following screen is possible to see LAN status.
M_Main80
+--------------------+
|Unit:01
MASTER|
|LAN status:ON
|
|MASTER Inlet water |
|
12.0°C|
+--------------------+
File:HWA_LAN_connection_rev.01.doc
Date: 14/02/2003
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