TM 5-6675-315-14
Table 2-2. CONTROL SYSTEM CIRCUIT SWITCHING SEQUENCE - Cont
OPERATOR ACTION
STEP CIRCUIT OPERATION
TURNING CUTTER FORWARD SWITCH VT ON - Cont
6.
Trip dog pressing HE0 clears. Power to ZR is cut. ZR contacts 68-67 open. All power to MP and MW
flows through HE1.
7.
Trip dog presses HE2 closed. Activation of control contactor relay SS is enabled.
8.
Trip dog pressing HE2 clears. Activation of SS is disabled.
NOTE
If bale chamber is full, pressure control switch DW will close and press ram will stop before step 8 is
initiated.
9.
Trip dog closes VE1. Timer X is powered.
10.
Timer X, after delay, energizes. SS operation is disabled. Power to MW is cut. Solenoid valve plunger
retracts, reversing fluid flow.
11.
Press RAM starts back. VE1 clears. Timer X de-energizes. Trip dog presses HE2 again (step 7).
12.
Trip dog pressing HE2 clears.
13.
Trip dog presses HE0. ZR energizes.
14.
Trip dog presses HE1. Two flow paths to SV are established. Power to MP is cut. Press RAM stops.
15.
After preset delay, ZR energizes. Power flows to MP and MW. Press cycle begins again.
PRESSING PRESSURE SAFETY SWITCH (SSP) DURING ADVANCE OF PRESS RAM.
1.
If HE1-B is closed power flows to timer X.
2.
SS and MW are deenergized. The press ram reverses direction and returns to start position.
2-13
