012-554-B2 Rev D
Page 4 of 16
2.4
Alarm Masking Switch
This feature prevents (masks) Minor Alarm reporting for unused feeds. The alarm LEDs are not masked. The
switch in the UP position will mask alarming. The switch in the DOWN position will enable alarming for the
converter module.
2.5
Test Points
Each converter module has front access, insulated, current limited meter probe test points for each ±190Vdc input
feed. Use a voltmeter set to >20M
Ω
input resistance to allow for accurate (<2% error) input voltage measurement.
2.6
Output Power
Each of the two isolated converters on each CSM46 module has a maximum output capacity of 75W (for a total
capacity of 150W per module). The power output is a function of the input voltage into each converter. Proper
network engineering and copper pair sizing is a requirement for meeting the power demand of the load.
Input Voltage
Figure 4–Power per converter
2.7
Over Voltage Protection (OVP)
The OVP feature safeguards the module and load from converter over voltage conditions. If an over voltage
condition is detected on a converter output, the OVP will shutdown the corresponding output. The OVP shutdown
level is factory set. Once an over voltage condition is sensed, the microcontroller for that output will attempt to
restart repeatedly.
2.8
Current Limit
The current limiting function provides a primary response to output overload situations. When the converter output
is in current limit, its front panel OUT LEDs are off.
O
ut
put
P
ow
er
per
C
onv
er
te
r
in W
at
ts
(max
imu
m m
od
ul
e
pow
er
i
s
dou
bl
e)
