Winco MDS50R3/B - Manual (Page 6)

Page 4
starter is engaged. The engine control module in the
control panel will disengage the starter when the unit
starts and engage the engine monitoring sensors.
c. “AUTO” - This switch position is used when the
MDS50R is used in a standby mode. With the switch in
this position a remote contact (i.e. Automatic Transfer
Switch) can be closed to engage the start circuitry. A
terminal block has been provided behind the customer
connection door for you to wire your remote contact into.
This remote contact must close to provide a path between
the start wire and battery negative.
2. DC Control Circuit Breaker (DCCB) (2)- The 15
amp DC Circuit Breaker protects the engine controller and
wiring harness against faults in wiring or control equip-
ment. The DCCB also prevents a discharge of the battery
due to a circuit fault.
3. Emergency Stop Switch (3)- When depressed this
switch will disconnect all the 12 volt power to the engine
control panel shutting the engine down. The lamp in the
emergency stop switch will light up when the switch is
depressed showing that the power to the panel has been
disconnected.
4. Engine Instruments
a. Oil pressure monitor gauge (OPG) (4)- The oil
pressure gauge is mounted on the front control panel and
indicates the engine oil pressure. The gauge serves a
dual function. In addition to displaying the oil pressure it
also provides the shutdown signal to the engine control
module if the pressure should drop too low. The shut-
down signal is factory preset at 15 psi (103 kPa/m sq).
b. Coolant temperature monitor gauge (CTG) (5)-
The coolant temperature gauge indicates engine coolant
temperature. The gauge serves a dual function. In
addition to displaying the water temperature it also
provides the shutdown signal to the engine control
module if the water temperature gets too high. The
shutdown signal is preset to operate at 225 f (407 k)
c. Battery Voltage Meter (6)- This DC voltmeter
monitors the VOLTAGE of the battery under static (at
rest) conditions, and under cranking and charging
conditions. The voltmeter indicates not only the condition
of the charging system, but also indicates the battery
reserve under cranking load in cold weather.
d. Running Time Meter (7)- This DC meter records
the total hours the engine has run.
5. AC Generator Controls
a. Voltage adjust rheostat (8)- Controls the output
voltage of the generator by varying voltage regulators
reference voltage.
b. Field circuit breaker (FCB) (9)- Protects voltage
regulator and exciter field in the event of a load short
circuit or equipment malfunction.
c. Voltage selector power switch (10)- This heavy
duty three position switch allows the operator to quickly
and safely reconnect the 12 lead generator to any one of
three output voltages. Once the output voltage is se-
lected, the switch may be locked to prevent it from
accidentally being changed during operation. Three
output voltage combinations are available with this
selector switch:
1. 120/240 Three Phase* (series Delta
configuration)
2. 120/208 Three Phase (Low or Parallel “WYE”
configuration)
3. 277/480 Three Phase (High or series “WYE”
configuration)
*This selector position is also used for single phase 120/
240 output by using only the L1 and L2 leads. The three
phase L3 output lead is the “wild” leg in the delta configu-
ration.
6. AC Generator Instruments
a. VM/AM Selector Switch (11)- This selector switch
allows you to check the amperage being drawn from
each generator leg and your line to line voltage.
b. AC Voltmeter (VM) (12)- Monitors generator
output line to line voltage, for all voltage operations.
c. AC Ammeter (AM) (13)- Monitors the amperage
that is being drawn from each leg of the generator.
d. AC Frequency Meter (14)- Monitors the generator
frequency.
7. Warning Light Cluster (15)- This light cluster
contains the indicator lamps for the four engine shut-
downs controlled by the engine control module. The
lamps will stay lit after a shutdown until the selector
switch has been moved to the off position. All the shut-
downs are reset when the selector switch is turned off or
the DC circuit breaker is turned off.