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Our Products — Auto-Cutoff Modules (ACM)
Description
The CamLight Systems Auto-Cutoff Module is connected between a NiCd or NiMH battery pack
and the load used to discharge it. The ACM accurately monitors your pack's voltage
level as it discharges and disconnects the load when the battery pack has reached the
selected cutoff voltage. Using just the ACM and your favorite load, you can safely discharge
any of 8 different voltage NiCd or NiMH packs, from the tinest cells to the largest.
The Auto-Cutoff Module can be used to:
- Safely condition your NiCd battery packs by making it easy to discharge to a known voltage every time.
- Test the capacity of your NiCd or NiMH battery packs by using the ACM along with a watt-hour meter
like the Astroflight Whattmeter.
- Safely test new battery packs, motors or drive train setups at high discharge current rates.
- Quickly discharge your battery packs down to 0.9V/cell before placing them in a discharge
tray (to discharge each cell individually).
- The ACM-40F's integral fan cools your battery pack or load while discharging.
All of CamLight's Auto-Cutoff Modules have the following features:
- Any of the eight cutoff voltages are selectable via a DIP switch.
- Can be used with an external load or on their own to discharge a battery pack slowly.
- Solid-state output, no relay contacts to arc or stick together.
- After pressing the Start button, a green LED indicates that the pack is discharging. If the LED lights
up red when you connect the battery pack, the leads need to be reversed.
- All switch settings and connections are clearly marked.
The ACM-40F and ACM-15 are protected from short-circuits, reversed polarity, over-temperature,
over-current, and surge current conditions.
The ACM's small size and low weight allows you to take it wherever you need to discharge your
battery packs. No need for AC power or another battery to worry about, the ACM runs itself from
the 6V-24V battery pack being discharged.
Specifications
| Description |
ACM-40F*** |
ACM-15*** |
| Max. continuous discharge current using an external load |
40 amps |
15 amps |
| Supported battery pack voltages |
6.0V (5 cells)
7.2V (6 cells)
8.4V (7 cells)
9.6V (8 cells)
12V (10 cells)
14.4V (12 cells)
18.0V (15 cells)
24.0V (20 cells) |
6.0V (5 cells)
7.2V (6 cells)
8.4V (7 cells)
9.6V (8 cells)
12V (10 cells)
14.4V (12 cells)
18.0V (15 cells)
24.0V (20 cells) |
| Battery pack cutoff voltage |
0.9V/cell |
0.9V/cell |
Fan for cooling battery pack
or load? |
Yes,
24CFM @ 12V |
No |
Absolute max.
battery pack voltage |
35V |
35V |
Discharge current when on,
no load |
370mA @ 24V,
80mA @ 6V |
55mA @ 24V,
5mA @ 6V |
| Current drawn when off |
15mA @ 24V,
2mA @ 6V |
15mA @ 24V,
2mA @ 6V |
| Can use
Load Modules as part/all of the load? |
Yes |
Yes |
| Protected from short-circuits, reversed polarity, over-temperature,
over-current, and surge current conditions? |
Yes |
Yes |
Max. surge current before protection circuitry turns
off the ACM |
250A |
150A |
Load and
battery pack connections |
12AWG silicone
insulated wire |
14AWG silicone
insulated wire |
| Size |
2.5" cube |
2.35"W x 1.65"D x 1.5"H |
| Weight |
6 ozs. |
3 ozs. |
***For more detailed information, download the Operating
Instructions and Tips documents (see below).
Available Models and Options/Accessories
For prices and links to the dealers who carry our product line, see the
Price List & Ordering page.
| ACM-40F |
40-amp Auto-Cutoff Module with 12AWG silicone-insulated wire leads |
| ACM-15 |
15-amp Auto-Cutoff Module with 14AWG silicone-insulated wire leads |
| ACM-40F-PP |
Four Anderson PowerPole PP15/45 housings (red and black) with 30-amp contacts,
installed on the ACM's wire leads |
| ACM-15-PP |
Four Anderson PowerPole PP15/45 housings (red and black) with 45-amp contacts,
installed on the ACM's wire leads |
Downloads
Frequently Asked Questions (FAQ)
Answers to some of the most frequently asked questions regarding our Auto-Cutoff Modules are on the
FAQs page.
Copyright © 2003-2008 John Muchow. All rights reserved.
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