190-00303-05 GIA 63 Installation Manual
Rev. Y Page 4-23
4.5 Discrete I/O
DISCRETE IN* pins:
INACTIVE: 10 ≤ Vin ≤ 33VDC or Rin ≥ 100kΩ
ACTIVE: Vin ≤ 1.9VDC with ≥ 75 uA sink current, or Rin ≤ 375Ω
Sink current is internally limited to 200 uA max for a grounded input
DISCRETE IN pins:
INACTIVE: Vin ≤ 3.5VDC or open
ACTIVE: 6.5 ≤ Vin ≤ 33VDC with ≥ 75 uA source current
Source current is internally limited to 1.5 mA max for a 10-33VDC input
DISCRETE OUT* pins:
INACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤ Vout ≤ 33VDC)
Leakage current in the INACTIVE state is typically ≤ 10 uA to ground
ACTIVE: Vout ≤ 0.5VDC with ≤ 20 mA sink current
Sink current must be externally limited to 20 mA max
ANNUNCIATE* pins:
INACTIVE: Floating (can be pulled up to externally sourced Vout in the range 0 ≤ Vout ≤ 33VDC)
Leakage current in the INACTIVE state is typically ≤ 250 uA to ground
ACTIVE: Vout ≤ 0.5VDC with ≤ 500 mA sink current
Sink current must be externally limited to 500 mA max
Table 4-16. Discrete I/O
Pin Name Connector Pin I/O
DISCRETE IN
P064
4, 5, 10,
15, 16
In
P605
3, 12,
16,
50-51,
60, 74
In
DISCRETE IN*
P064
7-9,
12-14,
17-21,
24
In
P605
37-46,
49,
52-55,
59, 73
In
DISCRETE OUT*
P605
47,
68-70
Out
P606
67-75,
77
Out
ANNUNCIATE* P605 71, 72 Out
ANNUNCIATE* P604
1, 6,
25-44
Out
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