AFX SERIES® OPERATION MANUAL
SECTION 4: TECHNICAL SPECIFICATIONS
Entire Contents Copyright
2018 by Pacific Power Source, Inc. (PPS)
• All Rights Reserved • No reproduction without written authorization from PPS.
AFX Series Power Source Operation Manual
Page 40 of 402
4.14
Auxiliary I/O
The Auxiliary I/O functions are only available on 3xx0AFX-2A and 3xx0AFX-4A version power
source models.
The following technical specifications apply to the Auxiliary I/O functions.
AUX I/O SIGNAL SPECIFICATIONS
Digital Inputs
Input Signals
Remote Inhibit, External Trigger Input, Phase Sync, User Inputs (3)
Voltage Levels
Logic low: Vin < 0.4 V
Logic High: Vin > 2.0 V
Input Impedance
10 k
Absolute max. voltage
12V
Digital Outputs
Output Signals
Open Collector (0.5A max. protection):
FORM Relay Control, Transformer Relay Control
Note: DO1 and DO2 are TTL outputs with 5.2V output and 200
output
impedance. Into a 5k
load, the output voltage is ~5V.
Note: DO3 and DO4 are open-drain outputs with internal pull-up of 1k to
5.5V with a diode protection. At no load, these outputs will measure 5.5V.
With a 5k
impedance, these outputs will measure ~4.6V.
TTL Level:
Relay State/Function Strobe / Trigger Out
Phase Reference (sync output)
User programmable outputs (2)
Voltage Levels @ 0.4 mA
Logic low: Vin < 0.4 V
Logic High: Vin > 4.6 V
Output impedance
200
Analog Inputs
Signals
Analog Inputs (4)
Voltage Range
-10V – 10V
Accuracy
± 0.1 % F.S.
Sampling Rate
10 Hz or10 times/sec
Open Circuit Level
2 ~ 3 % of F.S. if analog input is left floating (no connection)
Input Impedance
5 k
Absolute max. voltage
12V
Analog Outputs
Signals
Analog Outputs (4)
Voltage Range
0V – 10V
Accuracy
± 0.1 % F.S. (with 5 k
load or higher)
Update Rate
10 Hz or10 times/sec
Output Impedance
5 k
Power
Output
12.0 Vdc
Accuracy
± 0.1 Vdc
Max. Current
0.5 Adc
RS232
Signals
Tx, Rx
Handshake
Xon/ Xoff
Baud rates
9600 – 460800 bps
