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electrical:solar:tracer [2018/01/19 21:24] frater_secessus [MPT boosting controllers] |
electrical:solar:tracer [2019/07/21 11:50] frater_secessus [quirks] |
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==== quirks ==== | ==== quirks ==== |
Some [[electrical:solar:charge_controller_setpoints|voltage setpoints]] are constrained in relationship to each other. Because of this it may be easiest to configure them [[http://techluck.com/cgi-bin/YaBB.pl?num=1486955008|in a particular order]]. | Some [[electrical:solar:charge_controller_setpoints|voltage setpoints]] are constrained in relationship to each other. Because of this it may be easiest to configure them in a particular order.((http://techluck.com/cgi-bin/YaBB.pl?num=1486955008)) This order places the configurations in increasing (or equal) voltages the way the controller wants it. |
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| - "Low Voltage Reconnect Voltage" |
| - "Boost Reconnect" |
| - Then "Float Charge" |
| - Then "Boost Charge" |
| - Then "Equalize Charge" |
| - Then "Over Voltage Reconnect" |
| - Then "Charging Limit" |
| - Then "Over Voltage Disconnect" |
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| {{http://img.mousetrap.net/boondocking/MT-50_displayEvil.jpg?150 }} |
Tracer (and the Renogy rebrands) refer to the **Absorption stage as "boost"**. This is an unforced error; the nonstandard term confuses newcomers and conflicts with the already-existing "[[electrical:solar:charge_controller#mppt|MPPT boost]]" term. | Tracer (and the Renogy rebrands) refer to the **Absorption stage as "boost"**. This is an unforced error; the nonstandard term confuses newcomers and conflicts with the already-existing "[[electrical:solar:charge_controller#mppt|MPPT boost]]" term. |
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The **battery icon** found on many Tracer controllers is unnecessary and misleading. The manual claims it is a [[electrical:depth_of_discharge|State of Charge]] meter but there is no guide to reading it. Secessus observes the following weak correlations: | The **battery icon** found on many Tracer controllers is unnecessary and misleading. The manual claims it is a [[electrical:depth_of_discharge|State of Charge]] meter but there is no guide to reading it. Since the same voltage can result in different display during charging and non-charging scenarios, it may actually be useful to think of as a **charging indicator rather than state of charge indicator**. Secessus' unscientific observation reveals these weak correlations: |
* 5 bars / 100%: float stage | |
* 4 bars / 80%: late Absorption | |
* 3 bars / 60%: early Absorption below Vfloat | |
* 2 bars / 40%: late bulk > Vfloat | |
* 1 bar / 20%: early bulk < Vfloat | |
* 0 bar / 0%: not charging, < 12.6-12.7v | |
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| | | **Charging**| **Not charging**| |
| | **5 bars / 100%**| Float| | |
| | **4 bars / 80%**| late Absorption| | |
| | **3 bars / 60%**| early Absorption| <= Vfloat| |
| | **2 bars / 40%**| late Bulk, >=Vfloat| | |
| | **1 bar / 20%: early bulk**| early Bulk, <Vfloat| <= Vreconnect| |
| | **0 bar / 0%: **| not charging| <= Vlvd| |
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==== A series ==== | ==== A series ==== |