140
Version Upgrades Appendix D
Differences in Expansion I/O Units
Note Refer to page 138 for details on compatible combinations of CPU Units and Expansion I/O
Units.
Item ZEN-8E1@ ZEN-4E@ and ZEN-8E@
Type 8 inputs/outputs 4 inputs, 4 outputs, and
8 inputs/outputs
Shape Width: 35 mm, no heat
dissipation slits
Width: 70 mm
Screw mounting method M3 (mounting holes on DIN
Tra ck )
M4 (holes on Expansion I/O
Units)
Power supply ZEN-8E1AR, -8E1DR:
Required.
ZEN-8E1DT: Not required.
Not required.
AC input
circuits
Input impedance 680 k
Ω 83 kΩ
Isolation method Not isolated Photocoupler
Input common Connected internally to power
supply terminal.
Separated as COM terminal.
DC input
circuits
Input voltage 10.8 to 28.8 VDC 20.4 to 26.4 VDC
ON voltage 8 V 16 V
Input impedance 6.5 k
Ω 4.7 kΩ
Isolation method ZEN-8E1DR: Not isolated
ZEN-8E1DT: Photocoupler
Photocoupler
Input common ZEN-8E1DR: Connected
internally to power supply
terminal.
ZEN-8E1DT: Separated as
COM terminal.
Separated as COM terminal.
Contact current for Models
with Relay Outputs
8 A/contact
The total for all outputs must be
as follows for each Unit: 20 A
8 A/contact
Maximum voltage for Models
with Transistor Outputs
28.8 VDC 26.4 VDC
Connectable CPU Units V2 CPU Units (See note.) V1 and Pre-V1 CPU Units
Z211-E1-03.book Page 140 Friday, November 21, 2008 10:38 AM
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