powersoft M-Drive Service Manual page 10

M-Drive | SERVICE MANUAL
7. Switching the Module On in DC:
DISCONNECT ALL PREVIOUSLY MADE CONNECTIONS
Connect the Interface Board and the Pressure Sensor,
disconnect the Fans.
Portrayed on (Fig. 10) is the connection's diagram
between two DC Power Supplies and the PL15 Connector
by means of the DigiMod Mains DC
Slowly increase the voltages on both power supplies to
spec, whilst on stationary regimen the current absorption
should fall to 200 mA.
If the Fans are inserted the absorption should fall to 217 mA.
CAUTION: the inrush current may rise up
to 3.15 A
8. Checking the Module in DC:
NO LOADS CONNECTED
Function Generator
A Function generator is needed in order to test the
module's Output Stage, since the module is DC powered
and operates without a Heatsink, it is very important to
test it with an adequate input signal.
The function generator must be capable of generating a
signal composed by 80 ms of a 50 Hz sine-wave burst
every 560 ms of silence (50 Hz 4/32 sine-wave), as
portrayed on (Fig. 11).
For testing purposes, the amplitude is set to 1 V
10
Cable.
!
peak
RMS
30 V 200mA
30 V 200mA
voltage (V)
1,4
0,7
0 100 200
-0,7
-1,4
80
voltage (V)
30 V 200mA
30 V 200mA
(Fig. 10)
300 400 500
640
(Fig. 11)
600 time (ms)