Mitsubishi Electronics 2033C technical manual Input Contacts for remote access of UPS

MITSUBISHI	2033C SERIES UPS	Page Number:
ELECTRIC	OWNERS / TECHNICAL MANUAL	2-7

B) Input Contacts (for remote access of UPS)

External contacts are provided by the user of the UPS system. The terminal voltage at the UPS is 24Vdc. External dry contacts are to be provided accordingly.

NOTE: Do not apply voltages to remote access input terminals. Damage to UPS may result.

Refer to Figure 2.8 for a typical wiring configuration. Although this figure shows the emergency stop configuration, the same wiring arrangement is used for battery temperature high. See below for terminal connection details.

FIGURE 2.8 Remote "Stop" Contact Connections

UPS Cabinet

Relay

Coil

24 VDC

Relay Coil current : 8.3mA

External to UPS

Cabinet

１

Emergency

Stop

2

Use Momentary Switches

User supplied

Details of input contacts for remote access :

Terminals 1 to 2 “Emergency Stop” contact input

Used to perform a remote UPS emergency power off (EPO).

The load will be dropped.

Terminals 3 to 4 “Battery Temp. High” contact input

Input fed by a thermocouple that monitors battery temperature. The converter float voltage level is reduced for battery over-temperature conditions. The external thermocouple will be user supplied

NOTE : In all cases, a switch having a protective cover is recommended in order to reduce possibility of accidental operation.

MITSUBISHI ELECTRIC 2033C SERIES UPS