Instruction manual

NGA 2000 MLT Hardware
INSTALLATION
5 - 35
Emerson Process Management GmbH & Co. OHG
Instruction Manual
90002929
07/2006
5.5.3 Driving Multiple Loads
Another popular application is driving multiple loads within one system by multiple outputs,
whereat the supply voltage for the loads is taken from one common source.
To minimize load switching generated disturbances special care is required when wiring the
system:
❏ AVOID to „serial" wire the loads‘ power supplies at which the power supply line starts at the
source and successively connects all loads (fig. 5-26):
❏ It‘s better to apply „parallel" wiring at which each single load is supplied by a separate
connection starting from a distribution point: Both „+" and „-" wire of any load are run together,
starting at the point of distribution and ending at the load (see fig. 5-27). The effect of
minimizing disturbances is intensified when using two-wire drilled cables.
WIRING SIGNAL TERMINALS: DRIVING MULTIPLE LOADS
Fig. 5-26: ”Serial” Wiring
Fig. 5-27: Running Supply Lines "Parallel”