Installing The Resistance Transmitters; Using The Positioner As A Position Transmitter - Samson 3274 Mounting And Operating Instructions

Installation
5.5 Installing the resistance
transmitters
To install a resistance transmitter, the follow-
ing retrofit parts are required depending on
the equipment:
− Basic unit: order no. 1690-1201
− Resistance transmitter 1:
order no. 1690-1204
− Resistance transmitter 2:
order no. 1690-1205
− Gear segment: order no. 1690-1202
Î Install the basic unit (see section 5.4).
1. Open the side housing cover.
2. Install the potentiometer into the potenti-
ometer carrier (5).
Tip
We recommend installing the potentiometer
into the potentiometer carrier before mount-
ing it.
Note
The fastening of the resistance transmitter al-
so serves as a sliding clutch. Therefore, the
fastening nut must not be tightened too far
and must be secured with locking lacquer.
3. Plug the stranded wires on the contacts
of the potentiometer.
4. Secure the potentiometer carrier.
5. Slide the potentiometer pinion onto the
potentiometer.
6. Slide the segment gear onto the shaft (4).
5-8
7. Adjust potentiometer as described in the
'Start-up' section.
8. Mount the locking spring of the potenti-
ometer.
9. Refasten the side housing cover.
5.6 Using the positioner as a
position transmitter
1. Disconnect the wires leading to the termi-
nals aL and eL.
Î Make sure that the disconnected wires
are properly insulated (e.g. by using in-
stallation clamps).
2. Wire the conductors of the external
three-step control signal (controller) to
the terminals aL, eL and 81.
Note
The terminals 11, 12 and 13 as well as the
priority circuit at terminals 82 and 83 do not
function when a positioner is used as a posi-
tion transmitter.
EB 8340 EN