Chapter 2 Specifications
2 – 74
Specifications
Item Specification
Type EH-CU
EH-CUE
Number of channels
2
1
Number of counts at the maximum
32 bits
（
0 to 4,294,967,295
）
Maximum frequency
100 k Hz (25 k Hz at multiplied by 4)
Count mode
Select by setting of DIP switch. (EH-CU is common to both channels.)
2-phase, 1-phase (CW/CCW, CK, U/D), 2-phase multiplied by 4
Differential input current
4 mA minimum
Differential input voltage
12 to 24V DC
Minimum ON voltage
10V DC
Minimum OFF voltage
4V DC
Insulation system
Photo-coupler
A:A, CW, CK
B:B, CCW, U/D
Number of input
points
3 points / CH
M: Marker (z)
Phase difference of each channel (A – B) during 2-phase counting
+45
°
to +125
°
when up, -45
°
to -125
°
when down
Minimum counter pulse width
ON: 4
μ
s, OFF: 4
μ
s
Minimum marker pulse width
10
μ
s (detected at ON edge)
External wiring method
30-pin connector
External wiring
Wired with twisted pair cables and batch shielded cables
Output voltage
12/24 V DC (30 V DC at the maximum)
Load current
20 mA / point at the maximum
Output method
Open collector output
Minimum load current
1 mA
ON
→
OFF
1 ms maximum
Output delay time
OFF
→
ON
1 ms maximum
Voltage down at ON
1.5 V at the maximum
Number of external output points
4
2
Normal counter
Current value = Set value 1, or Current value > Set value 1
Ring counter
Current value = Set value 2
Leak current
0.5 mA at the maximum
Polarity
(-) common within the module
External power supply
12/24 V DC (30 V DC at the maximum)
Insulation system
Photo-coupler
Internal current consumption
310mA maximum
