Table 4-2. User Port Pins - Advanced Energy RFG 1251 User Manual

Table 4-2. User Port Pins

Signal Return
Pin Pin
14 1 SETPOINT
STATUS
2 15 REFL PWR
MONITOR
3 16 FWD/DELV PWR
MONITOR
4 17 RF PWR ON
5 18 SETPOINT
6 19,21
20 7 RF STATUS
5706058-A
Signal
Signal Name
Type
Digital
Output
Analog
Output
Analog
Output
Digital
Input
Analog
Input
+24V DC Reference
Voltage
Digital
Output
Connectors, Indicators, and Controls
RFG 1251 Generator
Signal Description
A low-impedance path between these
pins indicates that an internal power
limit has been encountered. When RF
power is enabled, a high impedance
path between these pins indicates that
the generator is "at setpoint".
This 0 to 10 V signal represents the
reflected power as measured at the
output of the generator. This signal is
scaled to represent 0 to 1250 W.
This 0 to 10V signal represents the
forward or delivered power as
measured at the output of the generator.
See pin 8 for power regulation mode
selection. This signal is scaled to
represent 0 to 1250 W.
This signal is used to control the RF
output of the generator. A voltage level
of 4 to 30 V on pin 4 enables the RF
power. If pin 4 is open or grounded, RF
power is disabled. Note that the return
pin (pin 17) is common to both this
signal and to the PWR REG MODE
signal (see pin 8).
This 0 to 10 V signal defines the
desired setpoint for the generator's RF
output. It is scaled to represent 0 to
1250 W.
This dc voltage may be used for
controlling the RF power through pin 4
(pin 6 may be tied to pin 4 to enable the
RF power). The maximum current
capacity for this signal is 50 mA.
A low impedance path between these
pins indicates that the RF power is
present at the output of the generator.
The interlock loop must be closed and
the RF PWR ON signal must be active
to enable RF power.
4-3