Hyd-Mech H14A, Руководство пользователя

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3.12
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shuttle moves back fast.
3. As the shuttle approaches target length the FST output should shut off and the shuttle should travel slow for the “Dec.
Dist.” parameter, cushion distance. (i.e. 1.00”) When the shuttle reaches target length, the SVC output should light,
and the shuttle vise should close on the material.
4. FVO output light should come monetarily on and front vise should open.
5. FWD output should light as will as FST for the shuttle to move forward in fast speed. FST will turn off when the shuttle
home cushion period is reached and the shuttle should slow down into the home position.
6. FVC output should light and the front vise should close. FWD light should go out, HDN output should come on and
the head should start to descend for the cut. If blade is not running at this time, auto cycle will hold until min. SFM is
reached. Depending on “Hld Shtl Hm” parameter in the PLC, the shuttle may stay home and closed during the cut or
may move back to pick up the next length. HUP input should go out as the head descends, and HUP L/S deactivates.
7. After the cut is completed HDN input should light, HDN output should go out, the HUP output should light and the
head should move up. When the head reaches it’s up limit, HUP input should come on, HUP output off and the cycle
repeats with the next length being clamped on by the shuttle, front vise opening and the length being brought forward
to home position.
As mentioned, beside each input and output terminal there is a bank of red LED’s. Each light corresponds to its input or
output. An input LED will light when it’s specific input signal is being received at the PLC and output LED’s will light when
the PLC commands specific outputs. If an output LED is on but the output does not happen, check for voltage at the spe-
cific output wire. If voltage is not present then either the output relay is faulty/stuck or the output (3 amp) fuse has blown.
(See fuse information below) If a fuse is blown, a shorted directional valve coil (good coil should measure 30 to 40 ohms),
shorted noise suppresser at the coil, or shorted wiring could be the cause. If the fuse is good and no output voltage condi-
tion still exists, with the output light on, then the relay is defective. If this is the case the PLC will have to be returned to the
manufacturer for repair. (Contact HYDMECH SERVICE).
FUSES
The PLC has five glass fuses in line with it.
Fuse ‘4FU’ is a 2 amp instant blow fuse which feeds power to the input side of the PLC through input terminal ‘L’.
Fuses ‘5FU1’ to ‘5FU4’ are 3 amp time delay fuses which each supply power to a specific bank of output relays through
that bank of relay’s ‘COM’ terminal:
5FU1 is wired to terminal ‘COM 1’ supplying Outputs - Y0, Y1, Y2, Y3
5FU3 to terminal ‘COM 3’ supplying Outputs - Y10, Y11, Y12, Y13
5FU4 to terminal ‘COM 4’ supplying Outputs - Y14, Y15, Y16, Y17
5FU5 +- terminal “COM 5” supplying outputs -Y20, Y21, Y22, Y23
PROBLEM # 4
No Display
POSSIBLE CAUSES;
1. No power to the PLC.
2. PLC unit failure.
3. Faulty connection of cable between PLC & Interface
DIAGNOSIS;
Check POWER LED - to be on when the PLC is switched on.
If the light is on, PLC may have failed. Check for proper connection of cable at PLC & at interface. If connection is secure
replace. If light is not on - check the (2 amp) PLC fuse.
If the fuse is OK, check power to it.