Agilent Technologies TV 551 Notice De Mode D'emploi page 225

17
Technical Information
J1 - In-Out
Figure 15
If any signal isn't applied (no connection) the pump speed is set to
"High Speed" (714 Hz max and settable by window "121").
If a continuous signal is applied (pin 5 fixed at +24 V and pin 6 fixed
to ground) the pump speed is set to "Low Speed".
The Low Speed frequency is settable by window "117" (see
"RS232/RS485 Communication Description").
SOFT START: this input is used to provide a "soft start" to the pump;
in this condition the ramp-up time could be up to 45 min.
PROGRAMMABLE ANALOG SIGNAL: this output signal is a voltage
(from 0 to 10 Vdc) proportional to a reference quantity (frequency or
power) set by the user. The default setting is the frequency (see the
following example diagrams).
TV 551/701 SEM Navigator User Manual / 87-900-958-01(G) 225/276