CG emotron TSA Series, Instruction Manual

Page: 65 / 204

CG Drives & Automation, 01-5980-01r2 Main features 61
Example: Autoreset for thermal overload
A motor is protected by an internal protection for thermal
overload. When the protection is enabled, and a thermal
overload condition has occurred, the softstarter will wait for
the motor to cool down before resuming normal operation.
In this case the estimated time for cooling down is 300
seconds. When the problem has occurred three times in a
short period of time the softstarter will trip, It's time for the
motor to cool down.
To do this:
• Enable the Autoreset function by making the reset input
continuously high.
• Set maximum number of restarts to 3 in menu [2511].
• Activate Motor I
2
t to be automatically reset; set menu
[2521]to 300 s.
• Set relay 1, menu [551] to “AutoRst Trip” ; output signal
will be active when the maximum number of restarts is
reached and the softstarter stays in fault condition.
Example: Autoreset for undervoltage
In an application it is known that the main supply voltage
sometimes disappears for a very short time, a so-called “dip”.
That will cause the softstarter to trip an “Undervoltage
alarm”. Using the Autoreset function, this trip will be reset
automatically.
• Enable the Autoreset function by making the reset input
continuously high.
• Activate the Autoreset function in menu [2511],
Allowed Autoreset Attempts.
• The autoreset for the undervoltage alarm is activated in
menu [2564]. The set delay time starts counting when
the fault is gone.
Voltage detection is only possible during operation so if
the softstarter is stopped due to undervoltage, the delay
time starts counting immediately.
7.4 Programmable I/O
There are a number of selectable functions for analogue and
digital inputs and outputs, gathered under section 8.5, page
106.
• 1 analogue input [510]
• 1 analogue output [530]
• 4 digital inputs [520], with the possibility for up to 6
extra digital inputs if extended I/O option boards (max
2) are fitted.
• No digital outputs are available.
• 3 relays [550], with the possibility for up to 6 extra relays
if extended I/O option boards (max 2) are fitted.
• There are also 8 virtual I/Os [560]
7.5 Remote control functions
Operation of the Run/Stop/Enable/Reset functions
As default, the run/stop commands are programmed for
remote operation via the inputs on the terminal strip on the
control board. Default for the reset control is both remote
and keyboard.
With the parameter “Run/Stop Control” [2151] and “Reset
Control” [216], these functions can also be selected for
keyboard or bus communication control.
7.5.1 Default settings of the Run/
Stop/Reset functions
The default settings are shown in Fig. 44. In this example
the softstarter is started with DigIn 1 (Run FWD) and
stopped with DigIn 2 (Stop). A reset after trip can be given
with DigIn 4. The inputs are default set for edge control.
Fig. 44 Default setting Run/Reset commands.
NOTE: The examples in this paragraph do not cover all
possibilities. Only the default settings (factory) and the
most relevant combinations are given.
Reset
Control board
Run FWD
Di
gI
n 1
Di
gI
n 2
Di
gI
n 4
Stop
+2
4 V
+2
4 V
(pulse)
(pulse)
(pulse)