UNIFREM v.3.41x
10 May 2017
Page 151 from 180
Analog output AOUT2 setting:
[ID]
Path
Parameter
Setting
362
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
AO2 Type
0-20mA
1077
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
AO2 Source
ETP Current
366
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
Sig. (AO2_A)
0 mA
368
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
Sig. (AO2_B)
20 mA
945
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
AO2_A
0 mA
946
MENU \ SETTINGS \ INPUTS AND OUTPUTS \ ANALOG OUTPUTS
\ AO2 \
AO2_B
20 mA
ETP DIAGNOSTICS:
The possibility of checking the measured data:
[ID]
Path
Parameter
Description
869
MENU \ DIAGNOSTICS \ Functions \ Ext. thermal protection \
ETP Temperature [
°C
]
Temperature of the ETP sensor.
870
MENU \ DIAGNOSTICS \ Functions \ Ext. thermal protection \
ETP Current [mA]
Measuring current of the external
thermal protection.
867
MENU \ DIAGNOSTICS \ Functions \ Ext. thermal protection \
ETP Voltage [V]
Value of measured voltage drop on the
ETP sensor.
871
MENU \ DIAGNOSTICS \ Functions \ Ext. thermal protection \
Sensor rezistance [
Ω
]
Resistance value of the ETP sensor.
8.12
Overload switch „OPS“
For the evaluation of the maximum load of the construction or technological line, various devices
are used especially in lift drives of cranes, but also in other areas of frequency converters
deployment.
Frequency converters UNIFREM can evaluate the load of the drive by measuring the
electrical parameters (Displayed value - Load) and carry out the necessary changes in the
behavior of the drive, so that the operation of the drive will be safe.
„OPS“ can be used for example
for stroke drives of cranes, shifts at cutting, drilling and supports of machine tools. A new
conception of overload switch in UNIFREM frequency converters includes several improvements
and innovations.
Terms:
Load
–
It is an optional quantity, which represents a measure of the drive load. Motor torque,
motor current, Power or even AINx can be generally chosen, if load evaluation is external.
Overload
–
It is the drive status when the conditions of the drive overload are fulfilled. STOP can
be generated automatically, speed can be limited, or it can be signalized on the converter outputs.
Dynamic operation
–
It is the working status of the drive when accelerating in the positive
direction, when the drive overcomes the resistance of inertia mass and Coulomb friction except
static load.
Static operation
–
It is the working status of the drive during steady-state speed in the positive
direction.
Short commands count
–
It is a sequence of control commands, which bypasses the conditions
of formation of overload. For example, short commands START or intermittent acceleration.
The following parameters are used to configure the overload switch:
Parameter ID: 840
SETTINGS
–
> FUNCTIONS -> LIFTING FUNCTIONS -> OPS
