Emotron FDU Series, Instruction Manual, Page: 111 / 260

CG Drives & Automation 01-7491-01r0 Functional description 107
Motor PTC [237]
For AC drive sizes B to D (FDU48/52-003--074),
C2 & D2 (FDU48-025--105), C69 & D69 (FDU69-002--
058-54) and C2(69) & D2(69) (FDU69-002--058-20)
there is optional possibility to directly connect motor PTC
(not to be mixed up with PTC/PT100 option board, see
section 13.9 page 204).
In this menu the internal motor PTC hardware option is
activated. This PTC input complies with DIN 44081/
44082. For electrical specification please refer to the separate
manual for the PTC/PT100 option board, same data applies
(could be found on www.emotron.com/www.cgglobal.com).
This menu is only visible if a PTC (or resistor <2 kOhm) is
connected to terminals X1: 78–79. See section 4.5 page 52.
To enable the function:
1. Connect the thermistor wires to X1: 78–79 or for
testing the input, connect a resistor to the termi-
nals. Use a resistor value between 50 and
2000 ohm.
Menu [237] will now appear.
2. Activate input by setting menu “[237] Motor
PTC”=On.
If activated and <50 ohm a sensor error trip will occur. The
fault message “Motor PTC” is shown.
If the function is disabled and the PTC or resistor is
removed, the menu will disappear after the next power on.
I²t Min Spd [238]
Configures minimum allowed speed when [231] is set to
"Limit Spd". E.g. used for pumps that should not operate
under some speed.
11.2.4 Parameter Set Handling
[240]
There are four different parameter sets available in the AC
drive. These parameter sets can be used to set the AC drive
up for different processes or applications such as different
motors used and connected, activated PID controller,
different ramp time settings, etc.
A parameter set consists of all parameters with the exception
of the Global parameters. The Global parameters are only
able to have one value for all parameter sets.
Following parameters are Global: [211] Language, [217]
Local Remote, [218] Lock Code, [220] Motor Data, [241]
Select Set, [260] Serial Communication and [21B]Mains
Supply Voltage.
Select Set [241]
Here you select the parameter set. Every menu included in
the parameter sets is designated A, B, C or D depending on
the active parameter set. Parameter sets can be selected from
the keyboard, via the programmable digital inputs or via
serial communication. Parameter sets can be changed during
the run.
If the sets are using different motors (M1 to M4)
the set will be changed only when the motor is stopped.
The active set can be viewed with function
[721] VSD status.
NOTE: This function is not related to PTC/PT100
option board.
237 Motor PTC
Default: Off
Off 0 Motor PTC protection is deactivated
On 1 Motor PTC protection is activated
238 I²t Min Spd
Default: 0 rpm
Range: 0 - Max Speed
Dependent on: Set/View ref [310]
NOTE: Actual timers are common for all sets. When a
set is changed the timer functionality will change
according to the new set, but the timer value will stay
unchanged.
241 Select Set
Default: A
Selection: A, B, C, D, DigIn, Com, Option
A 0
Fixed selection of one of the 4 parameter
sets A, B, C or D.
B 1
C 2
D 3
DigIn 4
Parameter set is selected via a digital
input. Define which digital input in menu
“[520] Digital inputs”.
Com 5
Parameter set is selected via serial
communication.
Option 6
The parameter set is set via an option.
Only available if the option can control the
selection.
NOTE: Parameter set cannot be changed during run if
the parameter set includes change of the motor set
(M2-M4). In this case always stop the motor before
changing parameter set.