Installation guide

79
Characteristics (continued)
Advantys
™
STB Distributed I/O
Solution 0
Counter module STB EHC 3020
(1) Use of grounding kit is mandatory for counting at 40 kHz.
Characteristics
Electrical characteristics
Type of module STB EHC 3020
Frequency on counting inputs
kHz 1 channel, up to 40 (1)
Swapping Cold swap
Yes
Hot swap
Yes, depending on NIM and mandatory nature of module. See table on page 41
Mounting base
STB XBA 3000
PDM power distribution
module required
Voltage provided
V 24
Catalog number
STB PDT 3100/3105
Consumption on the
logic bus
c 5 V
mA 60 typical, 100 max.
Isolation Between island bus and I/O
c V 500
Input characteristics
Input type Counting inputs (IN A and IN B) Auxiliary inputs (EN and RST)
Nominal values Voltage
c V 24 (limits 19.2…30 V)
Current
mA 6
Limit values At state 1
c 11…30 V, current 2 mA minimum (at c 11 V)
At state 0
c - 3…5 V, current 1.5 mA maximum
Logic
Positive
Filter time Analog
μs 2,5 25
Digital
ms None (max. count 40 kHz)
0.40 (max. count 1 kHz)
1.20 (max. count 400 kHz)
–
Output characteristics
Output type OUT 1 and OUT 2 outputs
Rated voltage
c V 24 (limits 19.2…30 V)
Nominal current
A 0.5 (1 A per module)
Logic
Positive (by default), positive on 1 or 2 channels, negative on 1 or 2 channels (configurable)
Response time
See functional characteristics, page 78
Leakage current At state 0
mA up to 0.1
Voltage drop At state 1
V up to 3
Max. load inductance
Henry 0.5 at 4 Hz, or L = 0.5/I
2
x F where L: load inductance, I: load-in current, and F: switching
frequency
Short circuit and overload
protection
Type per channel
By current limiter (1.1 A typical/1.5 A max.) and electronic tripping (manual or automatic reset)
Default fallback
positions
Default
Set to 0 state for both channels
Configured
Hold last value, set to state 0 or 1 for each channel
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