Yamatake SDC35, User Manual

Page: 263 / 280

13-3
Chapter 13. SPECIFICATIONS
●
External contact input
Number of
input points: 4 points
Input type: Potential free contact or open collector
Allowable ON
contact resistance: Max. 250
Ω
Allowable OFF
contact resistance: Min.100 k
Ω
Allowable ON-state
residual voltage: Max. 1.0V
Open terminal voltage: DC5.5V±1V
ON terminal current: Approx. 7.5mA (at short-circuit), Approx. 5.0mA (at contact resistance of
250
Ω
)
Min. hold time: 200ms or more
●
Current transformer input
Number of
input points: 2 points
Input object: Current transformer with 100 to 4,000 turns (availability is by 100-turn
units)
Optional unit Model No.: QN206A (800 turns, hole diameter: 5.8 mm)
Optional unit Model No.: QN212A (800 turns, hole diameter: 12mm)
Current measurement
lower limit: 0.4Aac (800 turns, 1 time)
Formula; Number of turns ÷ (2000 X number of power wire loops)
Current measurement
upper limit: 50.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 X number of power wire loops)
Allowable measured
current: 70.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 X number of power wire loops) X 1.4
Display range lower
limit: 0.0Aac
Display range upper
limit: 70.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 X number of power wire loops) X 1.4
Display accuracy: ±5%FS
Display resolution: 0.1Aac