Fuji Electric FRENIC-ECO, Instruction Manual

Page: 45 / 246

2-25
Table 2.10 Symbols, Names and Functions of the Control Circuit Terminals
Classifi- cation
Symbol Name Functions
[13] Potenti-
ometer
power
supply
Power supply (+10 VDC) for the potentiometer that gives the frequency command
(Potentiometer: 1 to 5k
Ω
)
Allowable output current: 10 mA
[12] Voltage
input
(1) The frequency is commanded according to the external analog input voltage.
0 to 10 VDC/0 to 100 (%) (Normal mode operation)
10 to 0 VDC/0 to 100 (%) (Inverse mode operation)
(2) Used for PID process command signal or its feedback.
(3) Used as an additional auxiliary frequency command to be added to one of various
main frequency commands.
* Input impedance: 22k
Ω
* The allowable maximum input voltage is +15 VDC. If the input voltage is +10 VDC
or more, the inverter will interpret it as +10 VDC.
[C1] Current
input
(1) The frequency is commanded according to the external analog input current.
4 to 20 mA DC/0 to 100 (%) (Normal mode operation)
20 to 4 mA DC/0 to 100 (%) (Inverse mode operation)
(2) Used for PID process command signal or its feedback.
(3) Used as an additional auxiliary frequency command to be added to one of various
main frequency commands.
* Input impedance: 250
Ω
* The allowable maximum input current is +30 mA DC. If the input current exceeds
+20 mA DC, the inverter will interpret it as +20 mA DC.
(1) The frequency is commanded according to the external analog input voltage.
0 to 10 VDC/0 to 100 (%) (Normal mode operation)
10 to 0 VDC/0 to 100 (%) (Inverse mode operation)
(2) Used for PID process command signal or its feedback.
(3) Used as an additional auxiliary frequency command to be added to one of various
main frequency commands.
* Input impedance: 22k
Ω
* The allowable input voltage is +15 VDC. If the input voltage e10 VDC,
however, the inverter will interpret it as +10 VDC.
(4) Connects PTC (Positive Temperature Coefficient) thermistor for motor protection.
Ensure that the slide switch SW5 on the control PCB is turned to the PTC position
(refer to Section 2.3.8 "Setting up slide switches and handling control circuit terminal
symbol plate."
The figure shown at the right illustrates
the internal circuit diagram where SW5
(switching the input of terminal [V2]
between V2 and PTC) is turned to the
PTC position. For details on SW5,
refer to Section 2.3.8 "Setting up slide
switches and handling control circuit
terminal symbol plate." In this case,
you must change data of the function
code H26.
[V2] Voltage
input
Figure 2.19 Internal Circuit Diagram (SW5 Selecting PTC)
Analog i
nput
[11] Analog
common
Two common terminals for analog input and output signal terminals [13], [12], [C1], [V2]
and [FMA].
These terminal are electrically isolated from terminals [CM]s and [CMY].