Interfaces; Communication Circuit Overview - Toshiba G9000 Series Installation And Operation Manual

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Interfaces

10.1

This software resides in TIC control board and acts as gateway to control one or up to eight G9000 SCiB Energy Storage

Systems. Each cabinet contains two strings of 18 Toshiba SCiB Modules. The software should be setup where one sys-

tem is a leader and the other systems are followers that will report to the leader system. The software and SCiB system

will interface with the UPS with 4 signals:

1. UVR signal – The signal is used to trip the SCiB battery cabinet breaker or to prevent the breaker being turned on

when the UPS is powered down. Provided by UPS in 750KVA and lower systems. Provided by internal ESS power

supplies fed from UPS output in 1MVA and above systems.

2. Breaker AUX signal – this is a status signal that goes to the UPS and to the host controller to indicate the status of the

breaker. Once the UPS sees this signal, the UPS charger circuit will turn on.

3. Charger Stop signal - The host controller will control signal to the UPS to stop the UPS charger. Removal of the

signal will cause the UPS to start automatically. Note: Pins must be programmed to accept this signal according to the

Aux Input Contacts section of the G9000 UPS IO Manual. This programming must be done by service personnel

authorized by Toshiba. Service personnel should reference the UPS manual when reprogramming.

4. Remote Stop signal – Stop the UPS inverter during discharge.

The host controller in the leader will be responsible for controlling and issuing commands to the follower cabinets. The

follower cabinets will be responsible for reporting information to the leader. For example, during recharge, each follower

cabinet will report the string voltage to the leader and then the leader will determine which cabinet has the lowest string

voltage and issue the command to close the DC contactor for that string. The leader then will instruct the BMU with the

next lowest voltage to close its contactors once the charge voltage has reached the same point. This process will con-

tinue until the DC contactor has been closed in each cabinet and all the strings are at the same voltage.

G9000 Series SCiB Energy Storage Cabinet Installation and Operation Manual – 98485-002

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