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Lead Contents

Programmable Relay: Difference between ZEN's V2, V1 and Pre-V1 CPU Units

FAQ No. FAQ04288

Primary Contents

Question

ZEN Programmable Relays: What is the difference between V2, V1 and pre-V1 CPU Units?

Answer

The following table shows the relationship between the versions and functionality of the ZEN CPU Unit and ZEN Support Software.

Date of
upgrade
CPU UnitSupport Software
System
software
version
Main changes
January
2002
Ver. 1.1The following functions were added to the displays.
A Clear Display function
A Day/Month display object (DAT1)
The following functions
were added to Ver 2.0
(ZEN-SOFT01-V2).
Support for changes to
display function
Simulation function
Improvements to
functions, operating
procedures, and displays
May
2003
Ver. 2.0The number of timers, counters, weekly timers, calendar timers, and display
areas was increased from 8 to 16 each and the number of holding timers was
increased from 4 to 8.
A new CPU Unit with 20 I/O points was added.
The input circuits of CPU Units with DC power supply were made compatible
with both PNP and NPN.
A password input was added to the memory all clear function.
The model numbers of CPU Units end in "-V1."
The following functions
were added to Ver 3.0
(ZEN-SOFT01-V3).
Support for V1 CPU
Units with 20 I/O points
Support for V1 CPU
Units with 10 I/O points
February
2006
Ver. 3.0Multiple-day operation and pulse-output operation were added to weekly timers.
Twin timer operation was added to the timers.
An 8-digit counter and 8-digit comparators were added.
The power supply voltage for CPU Units with DC power supplies and the
transistor output voltage range was increased to 10.8 to 28.9 VDC.
The accuracy of weekly timers and calendar timers was increased to ±15 s or
less per month (at 25°C).
The accuracy of analog inputs was increased to ±1.5% FS.
Daylight Saving Time (DST) settings were added for Australia and New Zealand.
Connectable Expansion I/O Units: ZEN-8E1 types only.
Economy-type CPU Units and Communications-type CPU Units were added.
Use the ZEN-SOFT01-V4 Support Software
Note: The model numbers of CPU Units end in "-V2."
Support for the following
Units was added to Ver
4.1 (ZENSOFT01-V4).
V2 CPU Units with 20 I/O
Points
V2 CPU Units with 10 I/O
points
Half-size Expansion I/O
Units (-8E1).

Specifications

ItemV2 CPU UnitsV1 and Pre-V1 CPU Unit
StructureHeat dissipation slits removed.---
Mounting directionStandard (Vertical) Installation and Horizontal InstallationStandard (Vertical) Installation
Power supply voltage
for DC-input Models
10.8 to 28.8 VDC20.4 to 26.4 VDC
Inrush
current
CPU Units with
AC power supply
4.5 A max.40 A max.
CPU Units with
DC power supply
30 A max.20 A max.
Time accuracy±15 s/month (at 25°C)±2 min/month
Internal
bits
TimersTwin operation added.ON delay, OFF delay, One-shot pulse, and
Flashing pulse operation
Weekly timersMultiple-day operation and pulse operation added.Only normal operation possible.
Additions8-Digit counter (150 Hz, 1 counter)
8-Digit comparator
---
Daylight Saving Time (DST)Australia and New Zealand added.Manual, Europe, and America
LCD contrast adjustmentNot required.Supported.
Menu displaysNode number setting deleted.---
Connectable Expansion I/O
Units
ZEN-8E1[] (See note.)ZEN-4E[] and ZEN-8E[]
RS-485 communicationsCPU Units with RS-485 communications added (ZEN-
10C4[]R-[]-V2).
None

Memory Areas

AreaCPU Unit
V2 CPU UnitsV1 CPU UnitsPre-V1 CPU Units
10-point20-point10-point20-point10-point
CPU Unit input bits (I)6126126
CPU Unit output bits (Q)4 (See note.)8484
Timers (T)168
Holding timers (#)84
Counters (C)168
Weekly timers (@)168
Calendar timers (*)168
Displays (D)168
Work bits (M)16
Holding bits (H)16
Expansion I/O Unit input bits (X)12
Expansion I/O Unit output bits (Y)12
Analog comparators (A)4
Comparators (P)16
8-Digit counter (F)1---
8-Digit comparator (G)4---

Note:Output bit Q3 of CPU Units with communications cannot be output externally.

Compatible Combinations of CPU Units and Expansion I/O Units

The Expansion I/O Units that can be connected to V2 CPU Units are different from those that can be connected to V1 CPU Units and previous CPU Units. Expansion I/O Units with AC Inputs cannot be connected to V2 CPU Units with DC Power Supplies.
Expansion I/O Units cannot be connected to Economy-type CPU Units.

CPU UnitsSupported Expansion I/O Units
VersionCPU Unit typePower supplyModel
V2Standard LCD type
LED type
Communications type
ACZEN-[]C1AR-A-V2
ZEN-[]C2AR-A-V2
ZEN-10C4AR-A-V2
ZEN-8E1AR
ZEN-8E1DR
ZEN-8E1DT
Standard LCD type
LED type
DCZEN-[]C1D[]-D-V2
ZEN-[]C2D[]-D-V2
ZEN-8E1DR
ZEN-8E1DT
Economy typeACZEN-[]C3AR-A-V2Not supported.
DCZEN-[]C3DR-D-V2
V1 and Pre-V1Standard LCD type
LED type
ACZEN-[]C1AR-A-V1
ZEN-[]C1AR-A
ZEN-[]C2AR-A-V1
ZEN-[]C2AR-A
ZEN-4EA
ZEN-4ED
ZEN-4ER
ZEN-8EAR
ZEN-8EDR
ZEN-8EDT
DCZEN-[]C1D[]-D-V1
ZEN-[]C1D[]-D
ZEN-[]C2D[]-D-V1
ZEN-[]C2D[]-D

Input Specifications

DC Inputs I0 to I3 on Units with 10 I/O Points, I0 to I9 on Units with 20 I/O Points

ItemV2 CPU UnitsV1 CPU UnitsPre-V1 CPU Units
Input voltage range10.8 to 28.8 VDC20.4 to 26.4 VDC
Input impedance5.3 kΩ5 kΩ4.8 kΩ
ON voltage8 V16 V
Input commonsIndependent common terminalInternally connected to power supply terminal

DC Inputs I4 and I5 on Units with 10 I/O Points, Ia and Ib on Units with 20 I/O Points

ItemV2 CPU UnitsV1 and Pre-V1 CPU Units
DC inputsInput voltage range10.8 to 28.8 VDC20.4 to 26.4 VDC
Input impedance5.2 to 5.5 kΩ5 kΩ
ON voltage8 V16 V
OFF voltage3 V5 V
Analog inputsInput impedance100 kΩ min.150 kΩ min.
Accuracy±1.5% FS (Within rated ambient operating
temperature range)
10% FS (Within rated ambient operating
temperature range)

Output Specifications

ItemV2 CPU UnitsV1 and Pre-V1 CPU Units
Contact current for Models with
Relay Outputs
8 A/contact
The total for all outputs for each Unit must be as follows:
10-point CPU Units: 20 A max.
Communications-type
CPU Units: 15 A max.
20-point CPU Units: 40 A max.
8 A/contact
Maximum voltage for Models with
Transistor Outputs
28.8 VDC26.4 VDC