Hitachi WJ C1 Series User Manual

Chapter 5 Wire Connection
5-4-4
Function and electrical specifications of control circuit terminals
Item
Terminal
symbol
Terminal
name
Description
Electrical characteristics
Analog input/output
Power
supply
L
Common for
input signal
Common terminal for
internal power supply,
input terminal 1 to 8,
analog input/output and
pulse output terminals.
―
H
Power supply
for frequency
setting
10 VDC power supply.
Used when inputting a
frequency command from
the [Ai1] terminal with a
variable resistor.
Maximum allowable input
current: 10 mA
Analog
input
Ai1
Analog input 1
(Voltage input)
0 to 10 VDC voltage
input. It is adjusted at the
factory to reach the
maximum frequency at
9.8 V input. (Adjustable
with [A011] to [A014].)
Input impedance:
Approx. 10kΩ
Allowable input voltage range:
-0.3 to +12 VDC
Ai2
Analog input 2
(Current input)
4 to 20 mA current
inputs. It is adjusted at
the factory to reach the
maximum frequency at
19.8 mA input.
(Adjustable with [A101] to
[A105].)
Input impedance:
Approx. 100 Ω
Allowable input current
range: 0 to 24 mA
Thermistor
input
5
[PTC]
External
thermistor
input
Set "External thermistor
[PTC]" in "Input terminal 5
function selection
[C005]" to be enabled.
An external thermistor is
connected between this
terminal and the [L]
terminal to trip the
inverter due to a
temperature error. (Trip
at approx. 3 kΩ or more.)
Regardless of the sink or
source logic, the common
is the [L] terminal.
PTC type
Monitor
output
Ao1
Analog output
The monitor value
selected by the
parameter is output as a
0 to 10 VDC voltage
signal. (Adjustable with
[C106] and [C109].)
Maximum allowable current:
2 mA
Output voltage accuracy ±
10%
(Ambient temperature: 25°C
± 10°C)

Hitachi WJ C1 Series Specifications

General

Brand	Hitachi
Model	WJ C1 Series
Category	Inverter
Language	English