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© 2016-2018 American Innovations, Ltd.
The following procedures are general steps for a typical installation. For specific instructions, see the MicroMax
Interrupters User Guide (part no. 122204-000) available from your website account under the Help menu.
Installing the Equipment
Required Tools
Voltmeter
Windows
®
Laptop PC
Bullhorn
®
Tools configuration software
USB to mini-USB cable
Optional Tools
(Continued)
MicroMax GPS350
Installation and Configuration
Part No. 122207-000, Rev. 1
1 of 4
Derating Table
Ambient Temperature Interruption Cycle
Celsius Fahrenheit
0.8 s ON - 0.2 s OFF 4 s ON - 1 s OFF
25 ⁰C
35 ⁰C
45 ⁰C
55 ⁰C
65 ⁰C 149 ⁰F
95 ⁰F
113 ⁰F
131 ⁰F
77 ⁰F
60 A
60 A
58 A
49 A
38 A 51 A
66 A
78 A
80 A
80 A
CAUTION: Metal relay casing on the MicroMax GPS350 will get hot. Allow 5 - 10 minutes after interruption
stops before handling the unit.
CAUTION: Do not connect the MicroMax GPS350 to primary mains power.
WARNING: Before beginning any wiring to the MicroMax GPS350, ensure that power has been turned off at
the rectifier.
GPS350 Installation & Configuration
Quick Reference Guide
MicroMax GPS350
Installation and Configuration
(Continued)
Quick Reference Guide
Part No. 122207-000, Rev. 1
2 of 4
MicroMax GPS350 Quick Reference Guide
January 2017
1 To interrupt the AC power:
Connect Relay to Rectifier
GPS350 Relay
Connected to Rectifier
Positive Output
2 To interrupt the DC power:
NOTE: These connections are not polarity sensitive.
b Slide shrink wrap tube
(provided) onto the second
MicroMax GPS350 relay
cable.
d Wrap assembly with
shrink wrap to prevent
equipment shorting.
GPS350 Relay Cable & DC
Output Cable
GPS350 Relay Cable & DC
Output Cable Wrapped
a Remove the tap change bar from the taps.
b Connect the two MicroMax GPS350 relay
wires to the taps.
NOTE: Connect relay wires to the same taps
that were connected by the change bar.
c Connect the MicroMax
GPS350 relay cable to the
DC output cable using
available hardware.
a
Disconnect the DC output cable. Then connect one
of the MicroMax GPS350 relay cables to output.
GPS350 Relay Connected to
Rectifier AC
CAUTION: Do not connect the MicroMax GPS350 to primary power.
2
Locate Power Source for MicroMax GPS350
1 Determine how to power the MicroMax GPS350 using one
of the following sources:
1
Tap Change Bar
a Rectifier — with power turned on to the rectifier, use a
voltmeter to locate a power source across any two
available AC taps. The MicroMax GPS350 requires 8 - 42
V AC.
b A 120 V AC convenience outlet with the 12 V DC wall
adapter.
c A DC source, such as a 10 - 60 V DC battery.
2 Turn off rectifier power.
POWER DEVICE WITH:
FINE/COARSE TAPS
8 V - 42 V AC
OR
12 V DC WALL ADAPTER
OR
BATTERY
10 V - 60 V DC
Part No. 122207-000, Rev. 1
(Continued)
MicroMax GPS350 Quick Reference Guide
3 of 4
© 2016-2017 American Innovations,
Power
GPS Antenna
Connection
Connect Power Cable
Connect GPS Antenna Cable to
MicroMax GPS350
3 Connect red/white twisted wire cable to INPUT
connection on Power Cable. Then clip alligator clips
to rectifier AC taps. Voltage range is 8 - 42 V AC.
1
Connect GPS antenna cable to
MicroMax GPS350 GPS Antenna
connection.
2 Place GPS antenna outside of rectifier
in an area with a clear view of the sky.
1
Connect Power Cable to
MicroMax GPS350 Power
connection.
GPS350 Power Connection
2 OPTIONAL: If external relay is used, connect relay
control or coil to Power Cable OUTPUT. Be sure
to observe proper polarity, especially if a flyback
diode is present on a mercury relay coil.
Power Cable
OUTPUT
Alligator Clips
on Rectifier Taps
Power Cable
GPS Antenna
GPS350 GPS
Antenna Connection
Twisted Wire Cable Connected to Power Cable
Power
GPS Antenna
Connection
4
3
WARNING: Ensure that the antenna connection does not come into contact with any conductive surface of the rectifier.
Part No. 122207-000, Rev. 1
January 2017
4 of 4
MicroMax GPS350 Quick Reference Guide
Program MicroMax GPS350
5
9 Close and lock the clear cover on the MicroMax GPS350. Place interrupter inside the rectifier.
a
Press to select interruption schedule - Daily,
Continuous, or Start/Stop.
b Use and to move through fields; use
keypad to change settings.
c Press to begin program.
to move through fields; use to move through fields; use
6 For Interruption, enter a number between 1 and 9
for the program number.
1 Power on the rectifier.
2 Press to view GPS information.
3 Use and to change display contrast.
4 OPTIONAL: From the main menu, press to
run Test Mode. Press to return to main menu.
5 Press to set up an Interruption program OR
to set up an Interference program.
to change display contrast. to change display contrast.
Press to set up an Press to set up an
Press to view GPS information. Press to view GPS information.
MicroMax GPS350 Main Menu
12:01:03 02/25
1:Interrupt 2:GPS
3:Interference
4:Options :Test
Interruption Program
# 5 On 12.0 Off 03.0
Start 06:00 01/01/14
Stop 18:00 12/31/99
Change: / Set:
Change: / Set:
#10 On 13.0 Off 05.0
Delay 002.0
Cycle Time 0088s
Unit #07/10 Next:
Interference Program
8 For Interference:
a Use and to move through fields. Use
keypad to change settings.
b Press to select type of interruption.
c Press to select interruption schedule - Daily,
Continuous, or Start/Stop.
d Use and to move through fields. Use
keypad to change settings.
e Press to begin program.
to move through fields. Use to move through fields. Use
a Press to access a list of Options and then
to view or edit Switch and Int. Cycle options.
b To change settings, move the cursor to the option
and press .
7
For Interruption Output Parameters:
To change settings, move the cursor to the optionTo change settings, move the cursor to the option
and press . and press .
Switch: Norm Closed
Int. Cycle: ON/OFF
Move: Change:
Done: Cancel:PREV
Done: Cancel:PREV
Move: Change:
Move: Change:
Move: Change:
Done: Cancel:PREV
Done: Cancel:PREV
Out Parameters
The following procedures are general steps for programming the GPS350 using the unit keypad. For instructions
on programming the unit with Bullhorn Tools, refer to the online help available from the Bullhorn Tools Help
menu or to the MicroMax Interrupters User Guide.
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