connected copper bars for parallel connection. It is strictly prohibited to connect two positive terminals
with cable on the far end.
When DC-DC is combined for one channel output, startup command and voltage regulation command
of the first channel will be used as CAN startup command and output voltage regulation command.
F8-14: model options (taking effect after power-on again after completing settings)
1: stand-alone mode, two channel 1.5kW
output (default working mode). Please confirm that the
output hardwares of the first channel and the second channel have been separated before setting.
2:
parallel connection mode,
single channel 3kWoutput. Please confirm that
the output hardwares of
the first channel and the second channel have been separated before setting.
Evaporating fan Short connected copper bars
Condensate fan
Condensate fan Evaporating fan
F8-14=1: stand-alone mode F8-14=2: parallel connection mode
Fig. 7 DC-DC stand-alone mode and parallel connection mode
4. Description of external keyboard
To use external keyboard SOP-20-810 for debugging, CV800 dedicated HEX configuration file must be
configured. SOP-20-810 should have built-in matched resistor and pull-up resistor.
CAN communication is used for keyboard communication, and it is within the same network of the CAN
of air conditioning control panel. When 23PIN
aviation plug is connected to 24V, the keyboard may
search CV800-DCDC equipment, and connected to 24V and 540VDC, CV800-INV equipment may be
searched. When disconnect 540VDC, CV800-INV will display communication drop. To have
CV800-INV (keyboard scans the equipment once after power-on and the first scanning time may be
1-2min) displayed after power-on again, reinsert he keyboard. Communication of SOP-20-810 LCD
keyboard is carried out with dedicated communication protocol and three devices in CV800. For details
of LCD keyboard upgrade and file configuration, see Appendix A.
Buckle
Fastening screw hole
RJ45 port
Display
Nameplate
Keys
Battery cover
Status indicator light Fastening screw hole
USB connector
Fig. 6 SOP-20-810
keyboard
● Ordinary digital control keyboard is not supported in CV800 products.
● Driver RJ45 and aviation plug shares the same CAN network, which can be connected to the
keyboard by means of
aviation plug switching cable.
If the air conditioning panel used is fitted with built-in resistor, when tested in factory, before inserting
SOP-20-810 keyboard for debugging, toggle the CAN matched resistance of PLC to position
“OFF”,
otherwise, communications might be unstable. If SOP-20-810 keyboard is not used, when the air
conditioning is delivered, be sure that PLC is in the position
“ON” (i.e., 120Ω matched resistance is
located at both ends of air conditioning CAN
communication network).
DC-DC station number: 7; PLC station number: 32; INV station number: 33