Hitachi L100 IP Series, Instruction Manual

Page: 30 / 94

Chapter 7 – Control circuit terminal functions
7-2
Terminal
symbol
Terminal function Description
P24
24V DC common for
digital inputs
Common terminal for the intelligent digital inputs
H
10V reference voltage
for analog set value
(using potentiometer)
O
Frequency set value
analog input (0-10V)
OI
Frequency set value
analog input (4-20mA)
Frequency command
L
Common terminal
for analog set value
inputs
H O OI L
Pot (1k – 2K)
H O OI L
0 - 9,6V DC (rated value 10V)
Input impedance 10k Ohms
H O OI L
4 - 19,6mA DC (rated value 20mA)
Input impedance 250 Ohms
Set value configured
using potentiometer:
Set value configured
using voltage input:
Set value configured
using current input:
The OI input (set value using analog current 4..20mA) will only be used if
the input configured as AT has been closed before. If no digital input has
been configured as an AT input then the set values that are present at termi-
nals O and OI will be added.
FM Frequency monitor
Using the FM output the output frequency can be monitored and displayed using
an external analog or digital meter. If needed, the motor current can be displayed
instead of the frequency.
Monitor
L 0V Common terminal for the FM output
FA1
(01)
FA2
(02)
Frequency arrival
signals
Frequency
FA1 active
Frequency
FA2 active
f
2
f
1
f
soll
When a digital output is configured as FA1 then a signal
is output as long as the output frequency is held constant
at set value. With a digital output being configured as
FA2, a signal will be output as long as the actual output
frequency is above the values set under
C 42 and C 43 .
RUN
(00)
RUN signal
The RUN signal is active as long
as the motor is running.
OL
(03)
Overload signal
The OL signal will be output when the actual motor current
is above the threshold set under C 41 .
OD
(04)
PID deviation signal
The OD signal will be output when the threshold set under
C 44 (level of PID deviation) is being passed.
Programmable
digital outpu
ts
11 and 12
AL
(05)
Alarm signal The alarm signal is output in case a trip condition occurs.
Connection of a
signal relay to digital
output 11 or 12:
CM2 12 11
Open collector
type output
(max. 27VDC, 50mA)
CM2 0V
This is the 0V common for the programmable digital outputs 11 and 12. These
open collector type outputs are isolated using photocouplers and are separated
from L common.
AL0
AL1
AL2
Alarm terminals
During normal trouble-free operation the terminals AL0 and AL1 are shorted.
During a trip condition or while power to the inverter is off the terminals AL0 and
AL2 are shorted instead.
Absolute maximum relay contact ratings:
250VAC; max. load of 2.5A (purely resistive) or 0.2A (at an cos phi of 0.4)
30VDC; max. load of 3.0A (purely resistive) or 0.7A (at an cos phi of 0.4)
Minimum relay contact ratings:
100VAC at a load of 10mA or 5VDC at a load of 100mA