Output Signal Delay/Hold Function (C130 To C141); Input Terminal Response Time; External Thermistor Function (Th) (B098, B099, C085) - Hitachi L700 SERIES Instruction Manual

4.2.78 Output signal delay/hold function
The output signal delay/hold function allows you to set on-delay and off-delay times
for each output terminal.
Since every output signal is turned on or off immediately when the relevant condition
is satisfied, signal chattering may occur if signal outputs conflict with each other. Use
this function to avoid such a problem by holding or delaying specific signal outputs.
To use this function, set on-delay and off-delay times for individual output terminals
(a total of six terminals, such as intelligent output terminals [11] to [15] and the alarm
relay terminal).
Output terminal
11
12
13
14
15
RY(AL*)
Item
Output on
Output off

4.2.79 Input terminal response time

- The input terminal response time function allows you
to specify a sampling time for each of intelligent input
terminals 1 to 8 and the FW terminal. You can use this
function effectively to remove noise (e.g., chattering).
- If chattering hinders constant input from an input terminal, increase the response time setting for the input terminal.
Note that an increase in response time deteriorates the response. The response time can be set in a range of about 2
to 400 ms (corresponding to settings of 0 to 200).
Item
Response time of intelligent
input terminals 1 to 8
FW terminal response time
4.2.80 External thermistor function (TH)
The external thermistor function allows you to connect an external thermistor
installed in external equipment (e.g., motor) to the inverter,
and use the thermistor for the thermal protection of the external equipment.
Connect the external thermistor to control circuit terminals TH and CM1.
Make the functional settings according to the thermistor specifications as described below.
When using this function, the wiring distance between the inverter and motor must be 20 m or less. Since the
thermistor current is weak, isolate the thermistor wiring to the inverter from other wirings appropriately to prevent the
thermistor signal from being affected by the noise caused by other signal currents, including the motor current.
Item
Thermistor for thermal
protection control
Thermal protection level
setting
Thermistor input tuning
Note: Specifying "01" for the thermistor for thermal protection control (b098) without an external thermistor
connected makes the inverter trip.
On-delay time
C130
C132
C134
C136
C138
C140
Function code
C130/C132/C134/
C136/C138/C140
C131/C133/C135/
C137/C139/C141
Function code
C160-C167
C168
Function code Range of data
b098
b099 0 to 9999. ( )
C085 0.0 to 1000.
Chapter 4 Explanation of Functions
Off-delay time
C131
C133
C135
C137
C139
C141
Range of data
0.0 to 100.0 (s)
0.0 to 100.0 (s)
C160 to C167: Response time of intelligent input terminals 1 to 8
C168: FW terminal response time
Range of data
0. to 200.
00 Disabling the external thermistor (TH) function
Enabling the TH function (resistor element with
01
a positive temperature coefficient [PTC])
Enabling the TH function (resistor element with
02
a negative temperature coefficient [NTC])
Setting of the thermal resistance level
(according to the thermistor specifications) at
which to trigger tripping
Setting for gain adjustment
4 - 75
Related code
C130: Output 11 on-delay time
C131: Output 11 off-delay time
C132: Output 12 on-delay time
C133: Output 12 off-delay time
C134: Output 13 on-delay time
C135: Output 13 off-delay time
C136: Output 14 on-delay time
C137: Output 14 off-delay time
C138: Output 15 on-delay time
C139: Output 15 off-delay time
C140: Output RY on-delay time
C141: Output RY off-delay time
Description
Setting of on
Setting of off
Related code
Description
Variable in step of 1
Related code
b098: Thermistor for thermal protection
control
b099: Thermal protection level setting
C085: Thermistor input tuning
Description