4-2
Chapter 4
Installation and Wiring
•
Regarding to the default setting of parameters for each terminal function, refer to the user
′
s guide for
HF-430NEO.
•
Refer to “4.3 Wiring of HF-TM2” as wiring sample.
■
External Thermistor (M3 screw terminal)
■
FRQ output terminal (M3 screw terminal)
Terminal
symbol
Terminal
name
Description
Electrical
characteristics
Th
erm
is
to
r t
erm
in
al
A
na
log
inp
ut
TH
External
thermistor
input
When an external thermistor is connected, and
resistance abnormality occurs due to abnormal
temperature, etc., trip the inverter.
Connect the thermistor with TH+ and COM.
The level of detecting resistance abnormality can be
adjusted from 0 to 10000
Ω.
[Recommended thermistor characteristics]
Recommended product: SHIBAURA ELECTRONICS
Co., Ltd. PB-41E
Allowable rated power: 100 mW or more
Impedance at abnormal temperature: 3
kΩ
0 to 5 VDC
［
Input circuit
］
COM
Analog
power
common
Terminal
symbol
Terminal name
Description
Electrical
characteristics
FRQ
ou
tp
our
t
er
mi
na
l
FRQ
out
p
ut
M
oni
tor
out
p
ut
FRQ
Digital monitor
(Voltage)
For digital monitor output, you can
choose the PWM output method at 6.4
ms interval or pulse output method
with about 50 % duty in which
frequency varies.
Pulse train output
0 to 10 VDC
•
Maximum allowable
current: 1.2 mA
•
Maximum frequency:
3.60 kHz
BC
Common for
digital monitor
This common terminal is for digital
monitor. This terminal “BC” is
combined with the base voltage (0 V)
against “P24”.
5 VDC
1
kΩ
2
kΩ
L
TH
Thermistor
4-7
