FläktGroup HYPOWER-GEKO - Terminating Resistors

HyPower-Geko Commissioning
FläktGroup DC-2014-0022-GB 2018-05/R5 • Subject to modifications 101
7.5 Terminating resistors
Unit printed circuit boards of the MATRIX 2000 control system are not equipped with
terminating resistors.
Terminating resistors of the MATRIX OP21 control panel have to be switched on or off
only if this network is established with other unit groups or additional modules, such as
a clock module, or to input and output modules through the MATRIX.Net.
These terminating resistors are placed at line start and end (refer to fig. 7-8):
• Activate the DIP switch on both users (e.g. control panels, unit MCBs or modules)
to “ON”.
The line beginning and line end correspond to the start and end of the bus cable. The
terminating resistors must also be switched on for stand-alone units.
Fig. 7-8: Setting terminating resistors
DIP switch Function
12
OFF OFF Terminating resistor switched off
ON ON Terminating resistor switched on (default setting)
MATRIX
511 2001 3001 4001 4001+IO
9
Module Module Module Control panel
Line beginning Line end
O
N
O
N
O
N
User instructions!
The default setting of the DIP switches ex factory are “ON/ON” and must be
switched off if used as an intermediate unit.