Rapid-Air CABINET REEL: R50, R60 & R70 SERIES - Manual (Page 7)

TAUT STOCK
The Taut Stock feature monitors the loop between the reel and the external equipment. If the
loop gets small enough to possibly cause damage to the reel, the interface contacts change state
and stops the external equipment.
If it is desired to monitor the reel then the following write-up will explain how to connect and
adjust this feature.
The “TAUT STOCK” feature is built into the Rapid-Air board #69100035 and wires to exter-
nal terminals 7-8-9. The terminal #9 is common and from terminal 8 to 9 is a normally closed
contact with power on the unit. Terminal 7 to 9 is a normally open contact with power on the
unit. These contacts are from “Relay 2” chip. See diagram. This relay has to be in place for
taut stock to work. There is also a 4 prong post labeled “JUMP” that has to be connected so
that relay 2 can be activated. To correctly apply the jumper, locate the post and then locate the
plastic 2 prong jumper, insert the jumper so that he left 2 vertical posts are covered. Once this
is in place the taut stock feature can be tuned.
To tune the taut stock, check that there are no connections on the terminals 7-8 & 9, except
those that were factory connected. Attach an OHM meter to terminal 9 & 8 with the meter set
to OHMS.
Start the reel and raise the dancer arm so that the reel is running at maximum speed. Raise the
dancer arm up to a point that the stock would be taut. Hold the dancer arm at this position and
adjust the pot “R9” of board 69100034 until the contact changes state. Release the dancer arm.
The contact should return to normal state. Raise and lower the dancer arm 2 to 3 times to insure
that the contact functions properly. Disconnect the OHM meter and connect the customer inter-
face. CAUTION!
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