Honeywell SYA14 Series, Manual

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107022-14 EN FR26 GLO 0100 Printed in Germany 38
5.4 Repair
POWER APPLIED TO MACHINE CONTROL SYSTEM
Before intervention, turn off and disconnect power from FF-LS Series safety light curtain and machine.
Failure to comply with these instructions could result in death or serious injury.
5.4.1 Sensing Unit Replacement
The two sensing units A/B are matched to each other by individual coding. Therefore, only connect a matched pair of
sensing units A/B (each has the same serial number) to a control unit. Failure to comply with these instructions will result in
improper product performance.
Replace the sensing units A/B as follows:
1. Disconnect the cable from the sensing units A/B connectors.
2. Loosen the mounting bracket screws and remove the sensing units A/B from the brackets.
3. Install the new sensing units A/B into the mounting brackets and tighten the screws.
4. Connect the cable to the new sensing units A/B connectors.
5.4.2 Fuse Replacement
The control unit has a power supply fuse (time delay 1.6 / 250 V) and three output contact fuses (time delay 4 A / 250 V).
Replace these fuses as follows:
1. Remove the protective plastic covers located on each side of the control unit face plate lid using a small screwdriver
(small recess in covers).
2. Loosen four captive screws securing the face plate lid on the control unit housing and remove the lid.
3. Locate the appropriate fuse near the terminal strips on the control unit printed circuit board (see figure 5-2).
4. Replace fuse with proper rating (power supply uses time delay; 1.6 / 250 V; output contact fuses use time delay 4 A /
250 V).
5. Reinstall lid, tighten screws and snap the protective plastic covers back in place.