Using a PT Controller: Setup
Page 126
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2017 Sensata Technologies
Info:
The ME-BMK battery monitor is required if the
Absorb Done Amps
setting is
used. The
Absorb Done Amps
setting relies on the
METER: 05C DC Amps-BMK
value to
determine when to transfer out of the Absorption charge stage.
◊
Set
Absorb Done SOC
– This setting can be used if a battery monitor kit is installed
and you want to use the SOC (State of Charge) of the battery bank to determine when the
batteries are fully charged. During the Absorption charge mode, once the
METER: 05A BMK
SOC
menu reaches the
Absorb Done SOC
setting, the charger transfers to the Float charge
stage.
Note:
The SOC is the best way to determine when the batteries are fully charged (any DC loads
or other charge sources connected to the battery bank will not affect the SOC reading).
Default setting:
100%
Range:
50-100%
Info:
A ME-BMK is required in order to use the
Absorb Done SOC
setting. If a valid
SOC number is not displayed under the
METER: 05A BMK SOC
menu (i.e.,
Think’n
,
No Comm
,
Power-up Fault
, or
Factory Fault
are not valid SOC numbers), then the PT
reverts back to
Absorb Done Time
.
• 07C
Max Charge
–
This setting determines the maximum current allowed to charge the
batteries during Bulk, Absorption, Float and Equalize charging, and sets a maximum time the
PT controller is allowed to operate in either charge mode.
◊
Max Charge Rate
–
This setting is provided as a percentage of the PT controller’s maximum
charging capability (100%=100 amps). It will limit the charge current to the battery bank to
prevent battery overheating caused by charging at too high a charge rate. A 100% setting
uses the maximum charging capability of the PT controller to charge the batteries if needed,
while a 0% setting minimizes the charging current.
Default setting:
100%
Range:
0-100%
Example:
The maximum charge rate of the PT controller is 100 amps and you need to limit the
charge rate to 60 amps. Choose a
Max Charge Rate = 60%
(i.e., 60 amps = 60% of 100 amps).
How do I determine where to set my Maximum Charge Rate?
Generally, set to a C/5*
rate (C = the total AH capacity of the battery bank—using the 20-hour AH rate). The C/5 rate is
usually used when the objective is to quickly charge the batteries (i.e., 400 AH ÷ 5 = 80 amp max
charge rate). A lower rate such as C/20* is used when the batteries need to be slowly charged.
*
C/5 or C/20 rate – charge rates are commonly expressed as a ratio of the total amp-hour (AH)
capacity of the battery bank. For example, with a 400 AH battery bank (C = 400), the C/5 charge
rate is 80 A (400/5 = 80 A).
CAUTION:
The C/5 or C/20 charge rate settings are general guidelines on how to set
your battery charge rate. For speci
fi
c charge rate requirements, refer to your battery
manufacturer.
CAUTION:
If multiple controllers are used on a single battery bank, ensure that the
total charge rate from all controllers is limited to the maximum charge rate needed
for your battery bank. The
Max Charge Rate
setting only limits the charging on each
controller individually, not on all controllers.
◊
Max Charge Time
– This setting is a safety feature that ensures abnormal conditions will
not cause the controller to hold batteries at a high voltage for a prolonged period of time. This
menu sets a maximum time the controller is allowed to operate in either the Bulk, Absorption,
or Equalization charge modes. If the controller reaches the maximum charge time setting,
it will transition to the Float charge stage. The “
OFF
” selection can be used if there is an
application where 25.5 hrs is not long enough.
Default setting:
OFF
Range:
OFF, 0.1-25.5 Hrs
Summary of Contents for ME-ARTR
Page 1: ...ME ARTR Advanced Router Owner s Manual Version 4 0 ...
Page 181: ...NOTES ...
