Siemens SIMOVERT FC Series Operating Instructions Manual page 10

05.1999
4 Start-up
WARNING
Prerequisites
Start-up steps
for the 6SE70
converter
Siemens AG 6SE7087-6CX84-3DF0
SIMOVERT MASTERDRIVES
It is not permissible to work on the board with the power supply
switched-on or when the motor is rotating. Voltages > 60 V can occur
on the board. Adjustment may only be carried-out by adequately trained
and knowledgeable personnel.
♦ The standard converter start-up with "closed-loop speed control"
has been completed
♦ Determine the maximum possible tachometer voltage from the
tachometer rating plate and the required motor speed at rated
system speed.
• Connect up the tachometer at terminal strip ATI:8-11
• Create the connection between the AT1 terminal strip:1 -2 and
the analog input 1 of the control board:
CU1 / CU2:
CUVC:
• Create a continuous shield from the tachometer to the converter
and connect the shield ground on the converter through a large
surface area (see Fig. 2).
• Adjust the parameterization at the basic unit (see parameter list
for description):
CU1 / CU2 CUVC
P208 P130
P210 P138
P652 P631
• If possible, de-couple the motor from the drive
• Select the monitoring parameter n (act. encoder) at the operator
control panel / converter:
CU1 / CU2: r214
CUVC: r218
• Accelerate the drive in steps (20, 50, 100 %) (encoder-free
control or v/f characteristic), and check the speed using a
handheld tachometer
• Check the speed at the operator control panel / converter
(monitoring parameter r214 (CU1 / CU2) or r218 (CUVC)), and if
required, adjust using potentiometers R1/R2; 10 V at maximum
speed.
If the load resistors are too high, base load resistors can be
mounted on the solder pins. (refer to Fig. 1).
• Activate the closed-loop speed control.
Analog Tacho-Interface
-X102: 30 - 31
-X102: 15 -16
Parameter name
S. speed actual value
an. tach. adjust.
set the CU-AE offset to 0
Start-up
4-1