Chapter 5 : Communication Interfaces; Mini Slot; Dry Contacts; Repo Port - Delta RT Series User Manual

Chapter 5 : Communication Interfaces

NOTE:
1. The UPS can still function properly without making the connections below.
2. For the location of the following communication interfaces, please refer to Figure 4-1
~ Figure 4-3.
5.1

MINI Slot

The MINI slot is for mini-size cards. You can install a Mini SNMP IPv6, Mini Relay I/O, or Mini MODBUS
card in this slot to let the system have network communication, dry contact function, and MODBUS
communication respectively.
5.2

Dry Contacts

The RT UPS provides one input dry contact for the UPS to receive external control signals. You can
set up relevant items in the Dry Contact Setting screen, which includes Disable/ ROO/ RPO/ Remote
shutdown/ Forced bypass/ On generator. Besides, there are three configurable output dry contacts for
users to receive the UPS's event information, status or internal messages. The output dry contacts are
normally open (NO). You can set up relevant items in the Dry Contact Setting screen, which includes
Disable/ On bat/ Low bat/ Bat fault/ Bypass/ UPS OK/ Load protected/ Load powered/ General alarm/
Overload alarm. Please refer to 9.2.2 Setting Menu and 9.2.4 Maintenance Menu for relevant
information.
5.3

REPO Port

The REPO port can be connected to an external switch. After the external switch is turned to the
'CLOSED' position, the UPS will switch off the inverter immediately and cut off the UPS output without
transferring to bypass mode.
NOTE:
1. You can use the management software to configure the REPO port as normally open
(NO) or normally closed (NC). The factory default setting is normally open (NO).
2. The REPO port can also be used for ROO application, which allows you remotely turn
on/ off the inverter. If you need detailed ROO information or ROO setup service,
please contact your local dealer or customer service. Please note that this port can
only be modified by qualified service personnel.
5.4

RS-232 Port

You can use a RS-232 cable (user supplied) to connect the UPS with a computer and install the
UPSentry 2012 software*
The RS-232 port provides the following functions
1. RS-232 communication (baud rate: 2400)
2. UPS configuration
3. Firmware upgrade (baud rate: 9600)
Amplon RT Series
1 to check and monitor the UPS status.
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