SIMOVERT P 6SE21 Series Inverters
English
Operating Instructions
Siemens plc 1995
G85139–A1615–U156–A
02.95
20
5.1.2 Direction of Rotation
The direction of motor rotation can be reversed by applying a voltage level of greater than +7 V to terminal 5 of the
control board. This can be achieved by connecting a short–circuit between terminals 2 and 5 on the control board or
applying an external control voltage of 7 – 33 V. If no connection is made, the output phase rotation will be clockwise.
5.1.3 Jog Feature
The inverter may be run up to a predetermined frequency (set via parameter P12) by applying an external control
voltage of 7 – 33 V to terminal 13 on the control board, or by connecting a push–button between terminals 2 and 13 on
the control board. The motor will only run while this voltage is applied, and the input is only active when the drive is
stopped.
The jog feature may be used for fine adjustment or ‘inching’ of equipment.
5.1.4 Speed Control
The motor speed is adjusted by the frequency setpoint. This can be adjusted by analogue means (0 –10 V on terminal
X11.7 or 0 – 20 mA / 4 – 20 mA on terminal X11.9) or digitally by the push–buttons located behind the front panel access
clip. These push–buttons may be duplicated by connecting push–buttons to terminals X11.16, X11.17 and X11.18
(see
Figure 4). A 10 V reference output is provided on terminal X11.6 so that an external potentiometer can be used. Certain
fixed frequency modes may also be selected
(see section 5.3.2).
5.2 First Switch–On
Note
Refer to section 6 if the inverter is to be used in conjunction with tachometer feedback. Refer to document no.
6SE2100–0
A64 if the inverter is to be controlled via the serial interface.
(1)
Check input power and connections
(see section 4).
(2)
Switch on input power. The display should illuminate and read 00.0. It will then alternate between 00.0 and the
frequency to which the drive will ramp up when started.
(3)
Set the parameters required
(see 5.3).
(4)
Set the frequency setpoint. Adjust the analogue setpoint to 0, or set digitally to minimum frequency via P09.
(Also see section 5.3.2 for digital frequency setpoint and skip mode operation.)
(5)
Select parameter P00, and then press ‘P’. The display should read 00.0.The display will then alternate
between 00.0 and the frequency to which the drive will ramp up when started.
(6)
Switch on the inverter at the run/stop input
(see section 5.1.1). The inverter runs to the minimum frequency set
by P07, or to the digital frequency setpoint (P09).
Note that if automatic boost operation has been selected
(see section 5.3.2), the inverter will measure motor
characteristics and startup will be delayed for several seconds. This only occurs at first start up following a
change (other than a change to zero) of parameter P19.
(7)
Adjust the low frequency voltage boost (P01) to suit the motor. If required, automatic boost may be used
instead
(see section 5.3.2). Reset to frequency indication by selecting P00 and pressing ‘P’.
(8)
Adjust the motor speed to the required value as shown by the front panel indicator.
(9)
To reverse the direction of rotation of the motor, apply a voltage to the FORWARD/REVERSE input via an
external switch. The front panel display and the motor should decelerate through 0 Hz and re–accelerate to the
set frequency using ramp values set by P02 and P03.
(10)
To stop the motor, apply a stop signal
(see section 5.1.1) or turn off the input power. The motor will run down as
defined by parameter P05 (or P11) until the display reads 00.0.
