Page 7.11
6-CHANNEL BATTERY SIMULATOR MODULE 41-752
pickering
SECTION 7 - MAINTENANCE INFORMATION
ALIGNMENT PROCEDURE
Caution:
Adjustment of this module is not routinely required; if a user adjustment is performed then it is done so at
the users’ risk, corruption of calibration data stored within the module could result in a return to factory event.
Install the module in the chassis and launch the Battery Simulator Soft Front Panel (further information on the Soft
Front Panel can be found on page 4.7). Next, launch the Calibration Panel by selecting
Calibration
from the
Options
menu.
The Calibration Soft Front Panel will pop up as shown in Figure 7.1.
Figure 7.1 - Windows Calibration Soft Front Panel
This panel provides three additional controls for the user to select:
Zero Voltage
,
Load Detect
and
Maximum Voltage
buttons at the left side of the panel.
Zero Voltage
and
Maximum Voltage
are used to set the minimum and maximum
voltage output from the module.
Load Detect
is not implemented on this module and so the control is not available.
Note:
It is recommended that the existing calibration data is recorded before any adjustment is performed, the table
overleaf can be used for this purpose. Data can be read for each channel in turn by selecting
Zero Voltage
and
Maximum Voltage
and clicking
Read Calibration Data
for each, the calibration data can be read from the calibration
window.
Connect a 100Ω load to the channel that is to be adjusted and connect a DMM across this load. Also ensure that
the safety interlock system is enabled (further information on the safety interlock system can be found on page 2.5).
Enable the channel’s output using the
Output Enable
rocker switch within the Calibration Panel.
From the Calibration Panel, select the
Zero Voltage
button, and adjust the rotary control or use the up/down arrows
on the keyboard until the DMM reads as close to zero volts as possible, this should be the point at which the DMM
no longer shows a decrease in voltage. Users should note that this is unlikely to be absolute zero volts and may be
a few mV, the Calibration Data should also not carry a value of zero. When complete, click the
Write Calibration Data
button to write the value to non-volatile memory.
From the Calibration Panel, select the
Maximum Voltage
button, and adjust the rotary control or use the up/down
arrows on the keyboard until the DMM reads as close to 7 Volts as possible. When complete, click the
Write
Calibration Data
button to write the value to non-volatile memory.
Record the results of the calibration procedure in the Alignment Test Record overleaf.
Once the calibration of the channel in question is complete, the channel can be disabled using the
Output Enable
rocker switch within the Calibration Panel.
Note:
After adjustment of the calibration data the module will require re-initialisation. This can be achieved by
closing the module within the Soft Front Panel and then opening again.
The Alignment data should be verified once complete. This can be achieved by using the Output Voltage Check on
Page 7.2.
Each Battery Simulation channel can be independently adjusted in turn using the procedure described above.
