8
Option Link Selection
The unit has a number of option selection links, located on various boards. The function and settings
are marked along side each link. These links must be set to the correct position before power is
applied.
Power Supply Voltage
The 5000 control system must be set for the correct supply voltage.
The supply voltage is selected via a link arrangement on the power supply board. The possible sup-
ply voltages are tabulated below, together with the necessary fuse rating.
In order to set these links and fit the correct supply fuse, the power supply board must be removed
(see Circuit board removal).
Boiler Pressure and Temperature Sensor Type and Supply
If a boiler pressure/temperature sensor or modulation potentiometer is used, the links LK9 and LK10
on the power supply board must be set to suit the type of sensor. For example:
For a 4-20mA loop-power sensor, choose a +20V supply with current (I) input.
For a 0-5V modulation potentiometer, choose a +5V supply with voltage (V) input
Ensure that option parameter 3.2 is set to match this jumper position.
Potentiometer Supply Voltage
The 5000 can either 5v or +15v DC to the potentiometers.
If the potentiometer moves over its entire 270º range for 90º of servo-motor travel, select a +5v
supply.
If the potentiometer is a 340º type but only moves over 90º of its range for 90º of servo-motor travel,
select a +15v supply.
For the basic drive board, a single jumper link (LK1) is fitted which determines the supply voltage
for all four feedback potentiometers connected to the board. The position for each supply voltage is
printed on the circuit board adjacent to the jumper.
For the isolated drive board, two jumper links are fitted which determine the supply to each of the
two feedback potentiometers connected to the board. The positions for each supply voltage are
printed on the board next to the link. LK1 selects the supply voltage for feedback potentiometer 1.
In order to set the feedback potentiometer supply jumpers, the boards must be removed from the
enclosure. For details of how to do this, see Circuit board removal.
SUPPLY VOLTAGE (V)
LINKS REQUIRED
FUSE RATING (mA)
110
LK1 AND LK3
315 ANTI-SURGE
120
LK4 AND LK6
315 ANTI-SURGE
220
LK2 AND PARK
160 ANTI-SURGE
240
LK5 AND PARK
160 ANTI-SURGE
POTENTIOMETER TYPE
SUPPLY VOLTAGE
MINIMUM
POTENTIOMETER VALUE
(Ohms)
MAXIMUM
POTENTIOMETER VALUE
(Ohms)
270° with full travel
5V
1K
5K
340° with 90° travel
15V
3K
15K
