Product Overview
Vertiv | Liebert CRD10 | User Manual 11
1.6.7
Filter Drier
Moisture in the refrigeration lifecycle can adversely affect the operations and service life of a system. In order
to rectify that condition, filter driers are used to filter out particles, remove, and hold moisture to prevent it
from circulating through the system.
1.6.8
Micro-Controller
The micro-controller used in CRD10 provides a simple operational user-interface and is developed using the
latest and highly advanced PID (Proportional–Integral–Derivative) regulation technology.
• Multilevel Password protection
• Self-recovery upon power failure, high-voltage & low-voltage protection & Phase loss protection
• Automatic phase-sequence switching upon the antiphase and rotate speed control of the outdoor fan
• High-end Fault diagnostic system to facilitate easy equipment maintenance Figure 1-10 shows the image of
the micro-controller
Figure 1-10 Display Panel of the Controller
1.6.9
Unity Card
The CRD10 unit is equipped with a Unity card. Unity card employs the Modbus Protocol to monitor and manage
a wide range of operating parameters, alarms, and notifications from the Micro-controller. The card
communicates with Building Management Systems and Network Management Systems via BACnet, Modbus,
SNMPv1/v2c/v3, LIFE/Remote Services, and YDN23 protocols.
The Unity card monitors up to 10 Liebert SN modular and integrated sensors. Available sensor types include
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