Tripp Lite SMART1524ET Owner's Manual page 9

Features
12 External Fan Connector
This connector supplies 24V DC (SMART1524ET) or 48V DC (SMART1548ET)
3A maximum to power a user-supplied external fan to cool a UPS installed in an
enclosure. The fan is powered ON via user-controllable temperature settings, as
reported by the UPS system's built-in temperature sensor. An external fan power
adapter cable is included with the UPS. Fan adapter wire gauge is 22 AWG.
Installation and wiring requires a trained technician.
13 PTS Control Connector
Connect the PTS / Power Transfer Switch option here.
14 External Battery Breaker
(100A for 24V DC Systems, 60A for 48V DC Systems)
The External Battery Breaker serves as both DC input overcurrent protection and
an on/off switch to allow DC battery power into the UPS. It must be switched on
for proper UPS operation.
15 Battery Voltage Test Points
These test points allow you to measure battery voltage. They accept 2 mm
diameter test probe tips. The battery circuit breaker must be ON to measure
battery voltage. CAUTION: The battery test points are for voltage sensing
only and should NEVER be used as an output DC power source.
16 Function keys (ESC, SCROLL, ENTER)
Located directly under the LCD panel, these buttons are used to operate and
control the UPS via the LCD panel.
17
LCD Panel
The 2.5-inch LCD display enables control of UPS operation and settings.
18 Indicator LEDs
These LEDs with color-coded messaging report Output (green), Alarm (yellow)
and Fault (red) status. Refer to the Troubleshooting section for alarm and fault
messaging information.
19 USB Port
This optional USB port allows UPS management via local terminal console.
20 RS-232 Port
This optional RS-232 port allows UPS management via local console.
21 Network Interface Card Slot
This optional slot can be used with Tripp Lite's WEBCARDLXMINI accessory
card and a limit of one optional "E2" environmental sensor for remote
management and monitoring via secure web browser or SNMP protocols. See
the documentation provided with the accessory card for installation and set-up
configuration information.
Attention! – When the optional slot is in use, the RS-232/USB
communications ports are disabled.
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