8
SECTION III PROGRAMMING OPTIONS
3.1
GENERAL
To provide additional flexibility and compatibility with earlier models, provision has been
included to allow voltage programming of all models with a 0 to –5 Volt programming input.
There are four different jumper-selectable modes for programming. The jumpers for selecting
the required operating mode are located on PCB100 (the large PCB), easily accessible upon
removal of the cover. Jumper locations are shown below in Table III-1.
The four modes are described below. The first three modes apply to all Series 602C, 603C,
605C, 606C and 612C units. The last mode applies only to the Series 612C and is included
only with Series 612C units ordered with the –5VPRO option.
3.2
STANDARD MODE
The unit is shipped in this configuration and operation is as described in the previous sections
of this instruction manual. The unit can be controlled using the internal pot or programmed
with a remote 0 to +5 Volt signal or controlled with a remote potentiometer.
3.3
-5 VOLT PROGRAMMING (for 0 to 100% output voltage) MODE
To achieve this operation the jumpers on PCB100 must be configured as shown in the chart
below. In this mode the programming signal is applied to P2 pin 4, same as for Standard
Mode, only now a 0 to –5 Volt programming input is required to achieve 0 to 100% output
voltage programming. No jumpers should be attached to P2, the external connector. In this
mode there is no internal control, the internal potentiometer is bypassed.
3.4
-5 VOLT PROGRAMMING (for 0 to 103% output voltage) MODE:
To achieve this operation the jumpers on PCB100 must be configured as shown in the chart
below. In this mode the programming signal is applied to P2 pin 4, same as for Standard
Mode. No jumpers should be attached to P2, the external connector.
In this mode the internal potentiometer is used to control the maximum programmed output
voltage at –5 Volt programming input. With the potentiometer fully clockwise, the output will be
0 to 103% of maximum for a 0 to –5 Volt input. With the potentiometer turned up
approximately half way, a 0 to –5 Volt input will produce a 0 to approximately 50% of maximum
output voltage.
This mode is included to provide exact compatibility with some previous units. It also provides
the user with a controllable upper limit on the programmed output for an input of –5 Volts.
