Omron SYSDRIVE MX2 SERIES, User Manual

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2 Design
2 - 12 Multi-function Compact Inverter 3G3MX2-V1 User’s Manual (I585-E1)
The table below shows the arrangement of the control circuit terminal block, and description and speci-
fications of each terminal.
2-3-3 Arrangement and Function of Control Circuit Terminal Block
Control Circuit Terminal Block
Item
Terminal
symbol
Terminal
name
Description Specifications
Analog Power supply SC Input signal
common Common terminal for the internal
power supply, digital input, and
analog I/O terminals.
FS Frequency
reference
power
supply This is 10 VDC power supply for
the terminal FV. Allowable current:
10 mA max.
Frequency set-
ting input FV Frequency
reference
input (Ana-
log voltage
input) This is 0 to 10 VDC analog volt-
age input.
By default, this is adjusted so
that the frequency reaches the
maximum at 9.8 V. (Adjustable in
A012/A014) Input impedance:
Approx. 10 k
Ω
Allowable input volt-
age range:
−
0.3 to
+
12 VDC
FI Frequency
reference
input (Ana-
log current
input) This is 4 to 20 mA analog DC
input.
By default, this is adjusted so
that the frequency reaches the
maximum at 19.8 mA. (Adjust-
able in A102/A104) Input impedance:
Approx. 100
Ω
Allowable input range:
0 to 24 mA
Sensor input S5
(TH) External
thermistor
input (Multi-
function
input termi-
nal used in
common) Set the Multi-function Input S5
Selection (C005) to 19 (TH: PTC
thermistor thermal protection) to
enable this terminal.
Connect an external thermistor
between this terminal and SC,
and the inverter will trip if a tem-
perature error occurs. (The
inverter trips when the resistance
of the thermistor is approximately
3 k
Ω
or higher.)
PTC type
Output AM Multi-func-
tion analog
output
(Voltage) This terminal can output the
specified signal as a 0 to 10-VDC
voltage signal. Allowable current:
2 mA max.
RS+ MP RP FS FV FI SC AM PC P2 P1
RS- S7 S6 S5 S4 S3 S2 S1 SC PSC P24
Short-circuit bar
(for sink logic)