page 31
AFG SPECIFICATIONS
PLC Signals
(continued)
Electrical
Supply voltage: The relay is powered from a 5 volt
regulator inside the AFG.
Input control: The relay state is controlled via a TTL signal
from the AFG and is in a “closed position” when a logic
‘1’ input is applied.
Output characteristics
Peak relay ac voltage: 350 volts
Continuous relay load current or peak ac voltage: 120 mA
Maximum relay peak load current: 300 mA
Typical relay contact resistance at 100 mA: 17 ohms
Isolation voltage between AFG and relay output: 1500 volts ac
ADAPTOR/CHARGER UNIT
The mains adaptor/charger supplied with the AFG is a constant-current type.
Primary: 230V – 50Hz (110V – 60Hz version also available)
Secondary: 100mA constant current at 9V
Charger output plug: Centre = positive Outer = negative
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