Tripp Lite EMS Series owner manual Set Configuration DIP Switches, Group a DIP Switches

Configuration

Set Configuration DIP Switches

Using a small tool, set the Configuration DIP Switches (located on the front panel of your unit, see diagram) to optimize Inverter/Charger operation depending on your application.

B4	B3	B2	B1
Group B Dip Switches

INPUT C/B

A4	A3	A2	A1
	OUTPUT C/B 12A

Group A Dip Switches

Group A DIP Switches

A1 Select Battery Type—REQUIRED

A4 A3 A2 A1

CAUTION: The Battery Type DIP Switch setting must match the type of batteries you connect, or your batteries may be degraded or damaged over an extended period of time. See “Battery Selection,” p. 7 for more information.

Battery Type	Switch Position
Gel Cell (Sealed) Battery	Up
Wet Cell (Vented) Battery	Down (factory setting)

A2	Select Charger Enable/Inhibit
		A4	A3	A2	A1	INHIBIT
	(Model EMS1250UL only)

Switch is preset to ENABLE, which permits continuous battery charging. If you are connecting the EMS1250UL

to batteries with a separate charger, you may set this ENABLE switch to INHIBIT to disable its built-in charger to

prevent overcharging.

Voltage		Switch Position
Inhibit		Up
Enable		Down (factory setting)
A2	Select High AC Input Voltage Point
			A4	A3	A2	A1	145V
	for Switching to Battery—OPTIONAL*
	(Models EMS1012UL & EMS2012UL)
							135V

Voltage	Switch Position
145V	Up
135V	Down (factory setting)

A4 A3 Select Low AC Input Voltage Point for Switching to Battery—OPTIONAL*

Voltage	Switch Position
105V	#A4 Up & #A3 Up
95V	#A4 Up & #A3 Down
85V	#A4 Down & #A3 Up
75V	#A4 Down & #A3 Down
	(factory setting)

A4 A3 A2 A1

A4 A3 A2 A1

A4 A3 A2 A1

A4 A3 A2 A1

*Most of your connected equipment will perform adequately when your Inverter/Charger’s High AC Input Voltage Point (DIP Switch #2 of Group A) is set to 135V and its Low AC Voltage Input Point (DIP Switches #3 and #4 of Group A) are set to 95V. However, if the unit frequently switches to battery power due to momentary high/low line voltage swings that would have little effect on equip- ment operation, you may wish to adjust these settings. By increasing the High AC Voltage Point and/or decreasing the Low AC Voltage Point, you will reduce the number of times your unit switches to battery due to voltage swings.

Group B DIP Switches

B1 B2 Select Load Sharing—OPTIONAL

Your Inverter/Charger features a high-output battery charger that can draw a significant amount of AC power from your utility source or generator when charging at its maximum rate. If your unit is supplying its full AC power rating to its connected heavy electrical loads at the same time as this high charging occurs, the AC input circuit breaker could trip, resulting in the complete shut off of pass-through utility power.

To reduce the chance of tripping this breaker, Inverter/Chargers may be set to automatically limit the charger output. This keeps the sum of the unit’s AC load and charge power within the circuit breaker rating. This charger-limiting function has four settings, allowing you to reduce the charger’s draw lower and lower, as needed, if the AC input circuit breaker keeps tripping under the normal AC loads of devices you have connected downline from the unit. The figures on the next page show how to set your DIP Switches to determine how heavy the connected load can be on your Inverter/Charger before charger-limiting begins.

5E