Omron Q2A Series Technical Manual page 88

3.5 Control Circuit Wiring
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Output Terminals
This chapter contains a list of output terminals and functions.
Terminal Name (Default)
N.O. output
1NO
(Fault)
N.C. output
1NC
(Fault)
1CM Digital output common
Terminal Name (Default)
2NO
MFDO
(During run)
2CM
3NO
MFDO
(Zero speed)
3CM
4NO
MFDO
(Speed agree 1)
4CM
Terminal Name (Default)
Pulse train output
PO
(Output frequency)
Analog monitor output 1
AO1
(Output frequency)
Analog monitor output 2
AO2
(Output current)
A0V Monitor common
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External Power Supply Input Terminals
This chapter contains a list of the functions of the external power supply input terminals.
Terminal Name (Default)
E24V External 24 V power supply input
A0V External 24 V power supply ground
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Serial Communication Terminals
This chapter contains a list of the functions of serial communication terminals and functions.
Terminal Terminal Name
RS485+ Communication input/output (+)
RS485- Communication output (-)
A0V Signal ground
88
Table 3.7 Fault Relay Output
• Relay output
• 30 Vdc, 10 mA to 1 A
• 250 Vac, 10 mA to 1 A
• Minimum load: 5 V, 10 mA (Reference value)
Table 3.8 MFDO
• Relay output
• 30 Vdc, 10 mA to 1 A
• 250 Vac, 10 mA to 1 A
• Minimum load: 5 V, 10 mA (Reference value)
Note:
Do not set functions that frequently switch ON/OFF to MFDO (2NO to 4CM) because this will decrease the
performance life of the relay contacts. The manufacturer estimates switching life at 200,000 times (assumes 1
A, resistive load).
Table 3.9 Monitor Output
32 kHz (maximum)
Refer to "Pulse Train Output" on page
Select voltage or current output.
• 0 V to 10 V/0% to 100%
• -10 V to +10 V/-100% to +100%
• 4 mA to 20 mA (receiver recommended impedance: 250 Ω)
Note:
Select with jumper switch S5 and H4-07 [AO1 Signal Level Select] or H4-08 [AO2 Signal Level Select].
0 V
Table 3.10 External Power Supply Input Terminals
Supplies backup power to the drive control circuit, keypad, and option board.
21.6 VDC to 26.4 VDC, 700 mA
0 V
Table 3.11 Modbus Communication
Modbus communications
Use an RS-485 cable to connect the drive.
Note:
Set DIP switch S2 to ON to enable the termination
resistor in the last drive in a Modbus network.
0 V
Function (Signal Level)
Function (Signal Level)
Function (Signal Level)
93 for more information.
Function
Function (Signal Level)
• RS-485
• Modbus communication protocol
• Maximum 115.2 kbps
SIEPYEUOQ2A01A AC Drive Q2A Technical Manual