Emotron VFX 2.0 User Manual

66 Functional Description Emotron AB 01-4429-01r2
Fig. 60 shows how the function integrates the square of the
motor current according to the Mot I
2
t Curr [232] and the
Mot I
2
t Time [233].
When the selection Trip is set in menu [231] the VSD trips
if this limit is exceeded.
When the selection Limit is set in menu [231] the VSD
reduces the torque if the integrated value is 95% or closer to
the limit, so that the limit cannot be exceeded.
Example
In Fig. 60 the thick grey line shows the following example.
• Menu [232] Mot I
2
t Curr is set to 100%.
1.2 x 100% = 120%
• Menu [233] Mot I
2
t Time is set to 1000 s.
This means that the VSD will trip or reduce after 1000 s if
the current is 1.2 times of 100% nominal motor current.
Thermal Protection [234]
Only visible if the PTC/PT100 option board is installed. Set
the PTC input for thermal protection of the motor. The
motor thermistors (PTC) must comply with DIN 44081/
44082. Please refer to the manual for the PTC/PT100
option board.
Menu [234] PTC contains functions to enable or disable the
PTC input.
Communication information
Motor Class [235]
Only visible if the PTC/PT100 option board is installed. Set
the class of motor used. The trip levels for the PT100 sensor
will automatically be set according to the setting in this
menu.
Communication information
PT100 Inputs [236]
Sets which of PT100 inputs that should be used for thermal
protection. Deselecting not used PT100 inputs on the PTC/
PT100 option board in order to ignore those inputs, i.e.
extra external wiring is not needed if port is not used.
NOTE: If it is not possible to reduce the current, the VSD
will trip after exceeding 110% of the limit.
Default: Off
Off 0
PTC and PT100 motor protection are disa-
bled.
PTC 1
Enables the PTC protection of the motor
via the insulated option board.
PT100 2
Enables the PT100 protection for the
motor via the insulated option board.
PTC+PT100 3
Enables the PTC protection as well as the
PT100 protection for the motor via the
insulated option board.
Modbus Instance no/DeviceNet no: 43064
Profibus slot/index 168/223
Fieldbus format UInt
Modbus format UInt
NOTE: PTC option and PT100 selections can only be
selected when the option board is mounted.
234 Thermal Prot
Stp Off
A
Default: F 140°C
A 100
°C0
E 115
°C1
B 120
°C2
F 140
°C3
F Nema 145
°C4
H 165
°C5
Modbus Instance no/DeviceNet no: 43065
Profibus slot/index 168/224
Fieldbus format UInt
Modbus format UInt
NOTE: This menu is only valid for PT 100.
Default: PT100 1+2+3
Selection:
PT100 1, PT100 2, PT100 1+2, PT100
3, PT100 1+3, PT100 2+3, PT100
1+2+3
PT100 1 1 Channel 1 used for PT100 protection
PT100 2 2 Channel 2 used for PT100 protection
PT100 1+2 3 Channel 1+2 used for PT100 protection
PT100 3 4 Channel 3 used for PT100 protection
PT100 1+3 5 Channel 1+3 used for PT100 protection
PT100 2+3 6 Channel 2+3 used for PT100 protection
PT100 1+2+3 7
Channel 1+2+3 used for PT100 protec-
tion
235 Mot Class
Stp F 140°C
A
236 PT100 Inputs
Stp PT100 1+2+3
A

Emotron VFX 2.0 Specifications

General

Brand	Emotron
Model	VFX 2.0
Category	DC Drives
Language	English