Chapter 2 Installation
Power Supply
TC8612 Rev 1.1 User Manual
2-2
2.4
Power Supply
The TC8612 can powered by an external DC power adapter
rated 12 VDC @300mA. There are two terminal block
connectors labeled "PWR A" and "PWR B" only one is
required to power up the unit (single power option units, see
note below)*. Since each TC8612 card is equipped with a
power redundancy capability, the power LEDs on the front
panel will light according to which power jack (A or B) is connected. Both LEDs
will light when power redundancy is utilized.
2.5
Dry Contact Alarm Relay (DCAR)
A terminal block connector at the rear panel provides for the Dry Contact Alarm
Relay. This relay can be used in NO (Normal Open) or NC (Normal Close)
configuration.
When used in NO (Normal Open) configuration, the relay will close if the unit loses
power completely or the Alarm is on. The relay remains open during normal
operation.
When used in NC (Normal Close) configuration, the relay will open if the unit loses
power completely or the Alarm is on. The relay remains close during normal
operation.
2.6
System Start Up
Apply the power by plugging the power plug into a power jack (both PWRA &
PWRB for dual power units).
After power is applied, all LEDs (except PWR & VCC LEDs) will flash
momentarily and the following LED status should be observed from the front and
back panels:
1.
The Power "A" and/or "B" and VCC LEDs should be lit.
Important
Read and only connect a supply voltage that corresponds to the
type plate of your device. Make sure that the contact load capacity
of the signal contact is not exceeded.
NOTE
TC8612 cards installed in the 1U rack chassis will not show the
PWR A LED in the “On” lit state and will be Off. This is normal
and the power to the card will be monitored by the VCC LED
being “On” lit.
