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TABLE OF CONTENTS
ELECTRICAL CONTROLS SEQUENCE OF OPERATION
NOTE: These instructions apply to all HDC-905-IDC units manufactured after June 2011, i.e. units equipped with manifold
22-127-021 rev. C and wired according to electrical circuit diagram 22-124-024 rev. G.
1) Press "Cycle start" button
-
1M energizes;
-
Aux. contacts 13 and 14 close;
-
Terminal 8 energizes;
-
Power at CR2 9&1;
-
Power reaches 2LS normally open, held closed switch (NO, HC);
-
Power on 11 to CR1, 13 and 14;
-
CR1, 5 and 9 close (latch);
-
CR1, 2 and 10 open (timer);
-
Energize 2 SOL H (4-way, 3-position);
-
Ram and platen descend.
2) As the ram and platen descend:
-
2 LS normally closed, held open switch (NC, HO) closes;
-
2 LS NO, HC opens;
-
Motor runs without button contact.
3) At full extension of piston rod and platen:
PS1 (if in "CRUSH" mode) or PS2 (if in "COMPACT" mode) make;
-
-
Energizes CR2, 13 and 14;
-
CR2, 9 and 1 open;
-
2 SOL H de-energizes;
-
CR1, 13 and 14 de-energize;
-
CR1, 2 and 10 close and the timer starts.
4) Timer cycle:
-
CR1, 3 and 11 close;
-
Power reaches decompression valve 3 SOL H;
-
1-2 second delay after which power reaches CR3, 13 & 14;
-
CR3, 2 and 10 open;
-
3 SOL H de-energizes and closes;
-
CR3, 5 and 9 close;
-
Power to 1 SOL H causing the ram and platen to ascend.
5) As the piston rod retracts and returns the platen to the ready position:
-
2 LS normally closed switch opens; and
-
1M de-energizes.
ELECTRICAL SYSTEM SPECIFICATIONS
This drum crusher was tested at the voltage specified at the time of order. To adapt to applications requiring
voltages that differ from your original specifications requires rewiring the motor and control transformer. Refer to the
appropriate electrical circuit diagram on pp. 11-14. Failure to rewire the motor and/or transformer automatically voids
the
LIMITED WARRANTY (p. 18
This table indicates how to wire 3-phase motors for 208-230VAC and 460VAC:
208-230VAC, 3-phase
Motor wire
1 & 7
2 & 8
3 & 9
4,5, & 6
WASH-DOWN (-WD) MODELS: Wash-down units are NOT waterproof! Only install and use wash-down units indoors.
Wash the crushing chamber only with warm or cold, non-caustic, low-corrosivity solutions applied at low pressure
(˂100 psi).
TABLE OF CONTENTS
or 19) and might significantly damage the electrical system.
Connect to contactor lead
T1
T2
T3
Tie together with wire nut
Copyright 2023 Vestil Manufacturing Co.
Rev. 1/16/2023
460VAC, 3-phase
Motor wire
1
2
3
4 & 7
5 & 8
6 & 9
HDC-905 MANUAL
Connect to contactor lead
T1
T2
T3
Tie together
Tie together
Tie together
Page 10 of 19
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