FusionModule5000 Smart Modular Data Center
Installation Guide (Single-Row Aisle Containment with
2000 mm High Cabinets, ECC800)
A Appendix
Issue 01 (2019-03-05)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
234
A.9 (Optional) Connecting the Linkage Cables Between
the Fire Extinguishing System and Access Actuator
After linkage cables are connected between the fire extinguishing system and access actuator,
the access actuator opens data center doors when the fire extinguishing system generates an
alarm signal.
Fire alarm signals are dry contact signals generated by the fire extinguishing system
selected by the customer.
Fire alarm signals are valid only when the dry contact is ON.
Connect fire alarm signal cables to the DI– and DI+ terminals at AI/DI_1 port or AI/DI_2 port
on the access actuator, the following figure shows how the fire alarm signal cables connect to
the AI/DI_1 port.
Figure A-45
Connecting fire alarm signal cables to the access actuator