THOMSON MEC 310#GENSET CONTROLLER User Manual

MEC 310 GENSET CONTROLLER
PM075 REV 2 09/08/20 Page 13 THOMSON TECHNOLOGY
Charger alternator connections
The charger alternator can be connected in 2 different ways:
1) Using the D+ terminal connected to terminal 12
2) Using the W terminal connected to the RPM input
Rex: Excitation resistor
12V systems: 47Ω 4 W
24V systems: 100Ω 6 W
At standstill the battery + is connected to terminal 9 (common), and a current flows to terminal 12
and via the D+ input on the alternator to ground (battery -). When the starter is engaged (cranking),
the battery will supply the D+ through the REX resistor, helping the alternator to excite. When the
alternator starts to produce voltage (excitation OK), the speed of the alternator will be above
running speed, and the voltage on term. 12 will rise to a value higher than the battery voltage and
then interrupt the current flow through REX and activate the running feedback input. Engine is
running.
Usually only one of these possibilities is used.
MEC 310
RPM
Starter
(crank)
Running
feedback
input
9
23
22
12
18
17
Rex
1N4007
+
-
Battery
B+
D+
W
Brush
Brush
Excitation
controller
Coil (rotor)
Exciter
Charge
alternator
U
V
W
Stator
If a stop coil is used, the REX resistor can be connected to the starter relay
(crank).

THOMSON MEC 310#GENSET CONTROLLER Specifications

General

Brand	THOMSON
Model	MEC 310#GENSET CONTROLLER
Category	Controller
Language	English