DH Instruments PPC3 - Turning-Off Custom Control Parameters; 7 Drv> (Drivers)

3. OPERATION
Page 57 © 2002-2007 DH Instruments, a Fluke Company
Custom control parameters are range specific. Changes made in one range
are stored for that range and are recalled when that range is returned to.
Changes made in one range do not affect any other range.
When custom control parameters are active, a <C> is appended to the
control mode indicating character (<S> for static, <D> for dynamic) in the
middle of the bottom line of the MAIN RUN screen.
3.4.6.2 TURNING-OFF CUSTOM CONTROL PARAMETERS
To return to default pressure control parameters for the active range and control
mode, select the control mode using [SETUP], <6control>, <2mode> (see
Section 3.4.6).
3.4.7 <7DRV> (DRIVERS)
 PURPOSE
To control the output signals of PPC3’s 8 channel, 12 V external drivers.
 PRINCIPLE
PPC3 external drivers are available to drive peripheral equipment in a PPC3 system, for
example, solenoid valves or the optional Self Purging Liquid Trap (SPLT). The driver
electrical connections are available from a rear panel connector
See Section 7.1 for driver specifications and pin-outs.
 OPERATION
To access the driver control function press [SETUP],
<7drv>. The display is:
External drivers: 1
2 3 4 5 6 7 8
Pressing the keypad numerical key driver number turns that driver ON and OFF with either a
momentary or a toggled response. An active driver is indicated by <*> immediately following
the driver number.
Pressing [ENT] while in the External drivers menu causes a menu to appear that allows
selection of whether the driver actuation by selecting the driver number will be
<1momentary> or <2toggle>.
The PPC3 PURGE function makes use of the valve driver option. Valve driver number 8 is used
to actuate the SPLT exhaust valve. The SPLT exhaust valve Is actuated when performing the
PURGE function and in the background every time the PPC3 VENT function is used. When
making use of valve drivers, note that when the PURGE function is enabled, valve driver
number 8 will be actuated independently of user initiated valve driver commands (see
Section 3.3.8).