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INSTRUCTION MANUAL:
ELECTRICAL MANAGEMENT SYSTEM (EMS)
Features
•
Low Voltage Protection: Whenever the AC line voltage drops below 104V for longer
than 6 seconds, the EMS will automatically shut down power to the RV.
If using an EMS-PT30X, the display will show a low voltage error code of
E 4
.
If using an EMS-PT50X, an
E 4
error code indicates a low voltage error on line 1
while a low voltage error on line 2 will display an error code of
E 6
.
If the EMS unit has shut off power to the RV due to a low voltage condition, it will
continue to monitor the line voltage. If the line voltage rises above 104V, and no
other error conditions are detected, the unit will initiate re-applying power to the
RV by starting the 2 minute 16 seconds (136 seconds) timer. While the timer is
active, the time delay indicator on the display will begin flashing. After the time delay
duration of 2 minute 16 seconds (136 seconds) has expired, the EMS will once again
provide power to the RV.
•
High Voltage Protection: There are stepped voltage ranges used for overvoltage
protection to account for line variations as described below.
»
If the AC line voltage rises above 132V but remains less than 140V for longer than
3 seconds, the EMS unit will automatically shut down power to the RV.
»
If the AC line voltage increases to a range greater than 140V but less than 156V,
the EMS will automatically shut down power to the RV after 1 second.
»
If the AC line voltage is greater than 156V, the EMS controller will shut down
power to the RV within 60 ms (0.06 seconds).
If using an EMS-PT30X, the display will show a high voltage error code of
E 3
.
If using an EMS-PT50X, an
E 3
error code indicates a high voltage error on line 1
while a high voltage error on line 2 will display an error code of
E 5
.
If the EMS unit has shut off power to the RV due to an overvoltage condition,
it will still continue to monitor the line voltage. If the line voltage drops back below
132V, and no other error conditions are detected, the unit will initiate re-applying
power to the RV by starting the 2 minute 16 seconds (136 seconds) timer. While the
timer is active, the time delay indicator on the display will begin flashing. After the
time delay duration of 2 minute 16 seconds (136 seconds) has expired, the EMS will
once again provide power to the RV.
•
Time Delay for A/C Compressor:
When first plugging in, if AC power is interrupted,
or the EMS detects a fault, the 2 minute 16 seconds (136 seconds) time delay is
activated. This is to protect the air conditioning compressor.
•
3-Mode Surge Protection (EMS-PT30X): This feature provides three modes of surge
protection; line to neutral (L-N), line to ground (L-G) and neutral to ground (N-G).
The total joule rating is 1,790 J and 44,000 A surge current. Response time is < 1 ns
(1
-9
second).
•
5-Mode Surge Protection (EMS-PT50X):
This feature provides five modes of surge
protection; line 1 to neutral (L1-N), line 2 to neutral (L2-N), neutral to ground (N-G),
line 1 to line 2 (L1-L2), and line to ground (L-G). The total joule rating is 3,580 J and
88,000A surge current. Response time is < 1 ns (1
-9
second).
•
Surge Indicator: In the event of a power surge causing the surge protection devices
across line to neutral (L-N), line to ground (L-G) to become damaged or depleted
within the EMS unit, the display will show an
E 10
error code. This indicates that the
