BEHLMAN BL10000 Series, User'S Manual And Technical Reference Manual

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3.7 REMOTE ANALOG CONTROL
REMOTE PRGM CONNECTOR
The REMOTE PRGM connector is a nine-pin female “D” connector located on the rear panel. It provides remote
analog control of the power source’s amplitude, frequency, output relay, and voltage range (TD option only).
A mating nine pin male connector is required for connection. It is recommended the user use multi-conductor
shielded wire to fabricate the control cable. Table 3-2 lists the connector pin descriptions and functions. During
remote operation, the unit's front panel VOLTS and FREQ controls must be set fully counter-clockwise
REMOTE AMPLITUDE AND FREQUENCY CONTROL
Two 0-10 Vdc control voltages from externally isolated voltage sources are used to control the unit's amplitude
and frequency via the fabricated remote cable. Note the control inputs are tied to the power circuit common.
This point is not the same as chassis potential unless externally connected ( see wiring info )
TABLE 3- 2. REMOTE PRGM CONNECTOR PIN DESCRIPTIONS
PIN FUNCTION DESCRIPTION
1 External synch HI The power source will lock to the frequency of the signal
applied to this pin. See external sync below.
2 External synch LO Isolated return for sync signal.
3 DC control common* Common return of power source . CAUTION see note 1
4 Amplitude control (hi) 0-10V applied controls output voltage from 1 - 100%. Input
impedance greater than 50K ohms. 300msec response.
5 Frequency control (hi) 0-10V applied controls output frequency from 45 -500 Hz.
Input impedance greater than 20K ohms.
6 Output relay control Application of short to pins 6-7 will activate the output
relay.
7 Output relay control Application of short to pins 6-7 will activate the output
relay.
8 Range relay control Application of short to pins 8-9 will activate the output
relay.
This function is provided with TD option only .
9 Range relay control Application of short to pins 8-9 will activate the output
relay. This function is provided with TD option only .
* NOTE 1: ISOLATED CONTROL VOLTAGES ARE RECOMMENDED . REMOTE CONTROL
COMMON IS AT THE OUTPUT NEUTRAL POTENTIAL.
3.8 EXTERNAL SYNC
The unit provides for external synchronization via its rear panel REMOTE PRGM connector. When an external
sync signal is applied to the unit, it reacts to produce an output frequency that is equal to the sync signal
regardless of the FREQ control setting. The external sync can be either TTL compatible or an AC signal from
5 to 30 VRMS. Note that a square-wave produces the least amount of phase shift between the sync signal and
output of the power source.
!
CAUTION
The external sync signal applied to the unit must not be lower than 45 Hz or higher than 500Hz to
avoid possible damage to the unit.
It is also recommended that load be de-energized and the output voltage of the power supply be set to zero
before connecting a sync signal. This will prevent potentially damaging transients from reaching the load.