User Manual 200 kVA-1200 kVA UPS
3 Installation
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switch and the battery switch to the UPS terminal, and do not avoid reverse connection.
3.2.5 Communication Signal Interface
General
This series of UPS integrates communication slot, RS485 interface, parallel operation interface, and basic dry
contact access and other communication signal interfaces.
Functional parts and communication signal interfaces are shown in Fig. 3-18.
Fig. 3-18 Diagram of functional units and communication signal interfaces
1
EPO interface (unavailable
for this model)
2
Dry contact interface
3
Dry contact output
interface
4
USB interface
5
RS485 interface
6
RS232 interface
7
Battery inspector interface
8
NET interface
9
Battery temperature
sensor interface
10 USB HOST interface
11
Monitoring display unit interface
12
Smart card slot
13 Parallel operation interface 14
Interface terminal TB1
Parallel operation interface
For parallel operation, use parallel operation control cable to connect the parallel operation interface of each UPS into a
ring. The single UPS does not need to connect the parallel operation signal interface between the host. When multiple
UPS form a parallel operation system, N parallel control cables (the parallel operation of up to 4 sets of the equipment
can be achieved) are required to connect N UPS to ensure that each UPS is connected at least two parallel operation
control cables to improve the reliability of the parallel operation.
Dry contact interface
By the dry contact interface of UPS, functions, such status monitoring of external devices, management of battery
system, the provision of warning signals to external devices and realization of remote emergency shutdown etc., can be
realized. The dry contact interface of the equipment can be customized, which is the default configuration upon delivery.
The default configuration of the input dry contact upon delivery is DI_1 for oil machine mode, DI_2 for battery switch
Interface terminal TB1
14
Summary of Contents for EA990 Super
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