Specifications
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Modicon
™
Momentum
™
automation platform
Discrete I/O bases
Specications for discrete I/O bases
Type of base unit 170 ADM 690 51
Number of points Inputs 1 x 10
Outputs 1 x 8
Operating voltage Vac 120 (47...63 Hz)
Internal current mA 160 (@ 120 Vac)
Inputs Voltage Vac 120
Signal type True high
On voltage minimum Vac 74
Off voltage maximum Vac 20
Input current mA 6.0 minimum at state 1, 2.6 maximum at state 0
Input voltage range Vac 74...132
Input resistance
kW
4
Response time ms Maximum 1/2 x 1/f Off to On, maximum 1/2 x 1/f On to Off
Outputs Voltage Vac 120…132 (@ 47…63 Hz)
Type Triac
Current capacity 0.5 A per point maximum, 30 mA per point minimum, 2 A per group, 4 A per module
Leakage current mA < 1.3 (@ 120 Vac)
Signal type True High
On state voltage drop Vac < 1.5 (@ 0.5 A)
Detected error indication None
Response time ms 1/2 x 1/f maximum from state 0 to state 1, 1/2 x 1/f maximum from state 1 to state 0
Maximum switching cycles 3000/hr for 0.5 A inductive load
Potential Isolation Input to input None
Output group to output group None
Input to output group None
Field to communication interface Vrms 1780 AC
Power dissipation Typical W 6
Maximum W 8
Protection Internal fuses A 2 x 2.5 slow-blow fuses
Agency approvals UL, e, CSA
Description:
page 12
References:
page 19
Dimensions, mounting:
page 20
Wiring diagrams:
pages 20 to 25
Specications (continued)