SHENZHEN INVT ELECTRIC CO., LTD. CHV160 Operation Manual
23
Terminal Name
Description
Input Impedance: 1.1K
PW
External power supply. Customers can directly connect it to
external power supply (between itself and COM), or use the
+24V power supplied by the inverter itself. It is factory set up
that the +24 is short connected to PW. Therefore, when
external power supply is to be used, PW should be
disconnected to +24V.
+24V
+24V power supply for the inverter itself.
Maximum Output Amperage: 150mA
COM
The common terminal of +24V or external power supply
AI1
AI3
AI4
Analog Input, with voltage range: 0
10V
Input Impedance: 10K
AI2
Analog Input, with voltage range
0
10V
/Amperage
0
20mA
selective by means of J18
Input Impedance: 10K
Voltage Input
/250
Amperage
Input
+10V
+10V power supply for the inverter itself
GND
Reference zero potential for +10V. (Note: GND is isolated from
COM)
Y1
Y2
Open circuit collector output terminal. Its corresponding
common terminal is CME
External Power Voltage Range: 0
24V
Output Current Range: 0
50mA
CME
common terminal of open circuit collector output
HDO
High speed pulse output terminal. Its corresponding common
terminal is COM
Output frequency range: 0
50 KHz
AO1
AO2
Analog output terminal, with selective voltage and amperage
by means of jumper J19
Output Range: voltage
0
10V
/current
0
20mA
PE
Grounding Terminal
RO1A
RO1B
RO1C
RO1 relay output, RO1A common terminal, RO1B
normal-close, RO1C normal-open
Contact rating
AC250V/3A
DC30V/1A
RO2A
RO2B
RO2C
RO2 relay output, RO2A common terminal, RO2B
normal-close, RO2C normal-open
Contact rating
AC250V/3A
DC30V/1A
RO3A
RO3B
RO3C
RO3 relay output, RO3A common terminal, RO3B
normal-close, RO3C normal-open
Contact rating
AC250V/3A
DC30V/1A
4.7 Installation Guide Based On EMC Requirements
4.7.1 General Description of EMC
EMC is the abbreviation of electromagnetic compatibility, which means the device or
system has the ability to work normally under electromagnetic environment, and it does not
produce electromagnetic interference to any thing in this environment. EMC includes two
subjects: electromagnetic interference and electromagnetic anti-interference.
According to the route of transmission, electromagnetic interference has two categories:
conducted interference and radiated interference
Conducted interference is the interference transmitted by conductor
and therefore, any
conductor, such as wire, transmission line, inductor, capacitor and so on, is the transmission