Distech Controls ECLYPSE APEX User Manual

124 ECLYPSE APEX
ECB-PTU Line-Powered Data Bus Controller Shield Grounding
Requirements
The shield on each data bus segment must be connected to the electrical system ground at one point
only, for example, at the ECY Series controller, as shown in the figures below.
Data Bus Shield
Connect to the ‘S’
terminal
RS-485
-
+
S
ECLYPSE
Data Bus: Shielded Twisted Pair Cable
Typical BACnet Line-
Powered Controller
Data Bus Shields: Twist
Together and Connect
to ‘COM’ Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shields: Twist
Together and Connect
to ‘COM’ Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shields: Twist
Together and Connect
to ‘COM’ Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shield:
Connect to ‘COM’
Terminal
NET- NET+ COM
Electrical
System
Ground
The shield of the data bus must be connected to
the electrical system ground at one point only –
usually at the Building Controller, when present
Figure97: Typical Cable-Shield Grounding Requirements for a BACnet MS/TP Data Bus Segment with an ECY
Series Controller located in the End of the Data Bus
Data Bus: Shielded Twisted Pair Cable
Typical BACnet Line-
Powered Controller
Data Bus Shields: Twist
Together and Connect
to ‘COM’ Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shield:
Connect to ‘COM’
Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shield:
Connect to ‘COM’
Terminal
NET- NET+ COM
Typical BACnet Line-
Powered Controller
Data Bus Shields: Twist
Together and Connect
to ‘COM’ Terminal
NET- NET+ COM
Electrical
System
Ground
The shield of the data bus must be connected to
the electrical system ground at one point only –
usually at the Building Controller, when present
Data Bus Shield
Connect to the ‘S’
terminal
RS-485
-
+
S
ECLYPSE
Figure98: Typical Cable-Shield Grounding Requirements for a BACnet MS/TP Data Bus Segment with an ECY
Series Controller located in the Middle of the Data Bus
Data Bus Shield Grounding Requirements When Mixing Both ECB 24V-
Powered Controllers and ECB-PTU Line-Powered Controllers
The shield on each data bus segment must be connected to the electrical system ground at one point
only, for example, at the ECY Series controller, as shown in the figures below.
Typical BACnet 24VAC-
Powered Controller
Data Bus Shield:
Isolate with
Electrical Tape
Typical BACnet 24VAC-
Powered Controller
Typical BACnet 24VAC-
Powered Controller
Data Bus: Shielded Twisted Pair Cable
NET+ NET- NET+ NET- NET+ NET-
Typical BACnet Line-
Powered Controller
NET- NET+ COM
Electrical
System
Ground
The shield of the data bus must be connected to
the electrical system ground at one point only –
usually at the Building Controller, when present
Data Bus Shield
Connect to the ‘S’
terminal
RS-485
-
+
S
ECLYPSE
Data Bus Shields:
Twist Together
and Connect to
‘COM’ Terminal
Data Bus Shields:
Twist Together
and Isolate with
Electrical Tape
Data Bus Shields:
Twist Together
and Isolate with
Electrical Tape
Figure99: Typical Cable-Shield Grounding Requirements for a BACnet MS/TP Data Bus Segment with an ECY
Series Controller located in the End of the Data Bus
BACnet MS/TP Communication Data Bus Fundamentals

Distech Controls ECLYPSE APEX Specifications

General

Brand	Distech Controls
Model	ECLYPSE APEX
Category	Control Systems
Language	English