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EMW SmartCharge-25000HV 

V12 QUICK START GUIDE  

(For a Fully Built Unit, PFC) 

 

PLEASE read this quick guide in its entirety BEFORE powering up anything! 

 

 

WARNING:

   This document describes circuitry that is directly connected to the AC 

mains, and contact with any part of the circuit may result in death or serious injury. By 
reading past this point, you explicitly accept all responsibility for any such death or injury, 
and hold Electric Motor Werks, Inc. harmless against litigation or prosecution even if 
errors or omissions in this warning or the document itself contribute in any way to death 
or injury. All mains wiring should be performed by suitably qualified persons, and it may 
be an offence in your country to perform such wiring unless so qualified

 

 

1.

 

This charger will work ONLY on High-Voltage packs with resting voltage of at least 310V and CV point 
of at least 340V (all numbers assume 240VAC input). Attempting to use this unit with lower voltage 
battery will damage the charger and may result in a fire. Quick specs: 

a.

 

Input voltage: 85-260VAC 

b.

 

Output voltage: 310-400VDC 

c.

 

Output power: 20-25kW (depending on version) 

d.

 

Micro-controlled, BMS-aware, serial remote control, multiple overheat protections, fully 
programmable in field, open source 

2.

 

Inspect unit for possible damage in transit. If you see any signs of damage, do not power up. Contact us at 

[email protected]

 for further instructions. It is very helpful to have photos of the damage when 

you contact us. 

3.

 

Place unit so that the fan inlets and outlets are on the sides (i.e. not on top and bottom). This is a preferred 
orientation for thermal management 

4.

 

[OPTIONAL] Connect BMS to the unit. There is a 5-pin connector broken out from the box. It normally 
has a jumper installed between the first 2 positions. In your actual system, if you want to use BMS, you 
would remove that jumper and connect a normally closed BMS loop (such as CleanPowerAuto’s 
miniBMS system) between those 2 terminals 

5.

 

Connect DC wiring to the unit (STOP and read the entire instruction set for this step before doing 
anything!) 

Summary of Contents for SmartCharge-25000HV

Page 1: ...unit with lower voltage battery will damage the charger and may result in a fire Quick specs a Input voltage 85 260VAC b Output voltage 310 400VDC c Output power 20 25kW depending on version d Micro controlled BMS aware serial remote control multiple overheat protections fully programmable in field open source 2 Inspect unit for possible damage in transit If you see any signs of damage do not powe...

Page 2: ...orm the above procedure every time or install an optional pre charge circuit on the output The simplest precharge circuit would consist of the same pair of precharge resistors with a relay rated for the output current of the charger across them The relay will have to be driven by D5 HC output on the control board This will ensure relay closes as the charge starts and thereby bypasses the inrush re...

Page 3: ... time you are running the charger press any button to program output power You will enter into the runtime configuration menu Press left normally red button to cycle through menu options run pwr timer confirm selections with right normally green black button a Enter input current The charger will not allow you to exceed its ratings 20 25kW depending on charger version so entering anything beyond 1...

Page 4: ... is in waiting for command mode signified by 1Hz READY message transmitted by the charger the main command is M ccc vvv E where ccc is the CC current and vvv is the CV voltage iii In the charging state the charger will send an ASCII string with major parameters every second Format M D0 C965 V334 T 68 O1 R0 E D uty 0 output C urrent 96 5A output V oltage 334V heatsink T emp 68C O utput charge 0 1AH...

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