15
MNL107-900-000D
3.2
TO OPERATE THE EQUIPMENT
1)
Ensure that front panel circuit breaker(s) is set to OFF.
2)
Connect a suitable load to NEMA 5-15R receptacles (or other optional output connector).
3)
Turn on AC INPUT Power.
4)
Turn on DC INPUT Power.
5)
Set the front panel circuit breaker(s) to ON (cooling fans noise should become evident). If
desired, the output voltage and frequency can be confirmed by connecting a true RMS voltmeter
such as a Fluke model 87 across the output terminals or load.
3.3 SHUTDOWN
PROCEDURE
1)
Set front panel circuit breaker(s) to OFF.
3.4 OPERATING
CONSIDERATIONS
The Behlman ACDC1200 series of power supplies are solid-state electronic devices. As such
they cannot supply infinite current and are therefore electronically protected from overloads.
Certain loads will draw “in rush” or start up currents that may be 10 times higher than their normal
run current. Although the design of the ACDC1200 allows for several hundred milliseconds worth
of “start” current, not all loads will behave the same. In many cases, a poorly designed power
supply or motor with no in-rush current limiting may trip the protective circuits of the model
ACDC1200. This may show up as a dip in voltage during start up (current limit) or an immediate
transfer to by-pass mode as the load is energized. The later indicates the back-up inverter has
entered a protection mode and power must be recycled to restore operation.
If problems are encountered energizing a particular load, the “in-rush” current of the load should
be determined before the problem is associated with the model AC/DC 1200. In the event of
problems see the trouble-shooting portion of this document. The Behlman engineering
department is also available to help provide a solution. Contact the factory for additional
information.
3.5 ALARM
CONTACTS
Rear panel alarm contacts are rated at 0.6 amps @ 125 VAC or 30 VDC. These contacts are
completely isolated from the AC and DC inputs. The diagram below illustrates the contact
arrangement.
Figure 3-1 alarm contact configuration
