8

Programmable Relay

ZEN V2 Units

■ Characteristics

Note: 1. Up to 34 points for CPU Units with 10 I/O points. With Communications-type CPU Units, however, the CPU Unit has 6 inputs and 3 outputs, for a maximum

of 33 I/O points.

2. Not provided for LED-type CPU Unit without display (i.e., ZEN-

@C2@@-@-V2 models).

■ Communications Specifications (Communications-type CPU Units)

Item

Specification

Control method

Stored program control

I/O control method

Cyclic scan

Programming language

Ladder diagram

Program capacity

96 lines (3 input conditions and 1 output per line)

Max. No. of control I/O points

44 points (See note 1.)

CPU Units with 20 I/O points: 12 inputs and 8 outputs

Expansion I/O Units: 4 inputs and 4 outputs each, up to 3 Units.

LCD display (See note 2.)

12 characters

× 4 lines, with backlight

Operation buttons (See note 2.) 8 (4 cursor buttons and 4 operation buttons)

User program backup

Internal EEPROM, Memory Cassette (optional)

Power interruption hold

Internal holding bit status, holding timer/counter present values, calendar and clock (year, month, day of month,

day of week, time)

• Super capacitor backup time: 2 days min. (25

°C)

• Life of optional battery:

10 years min. (25

°C)

Calendar and clock function

(See note 2.)

Accuracy:

±15 s/month (at 25°C)

Timer accuracy

0.01 s unit:

−0.05% −10 ms max. (rate for set value)

min/s unit:

−0.05% −1 s max. (rate for set value)

h/min unit:

−0.05% −1 min max. (rate for set value)

Maximum counting speed

150 Hz: 8-Digit counter (F) set to high-speed operations (CPU Units with DC power supplies only)

(The counting speed may be less than 150 Hz depending on the cycle time of the program. See page 21.)

Insulation resistance

20 M

Ω (at 500 VDC) min.:

Between power supply terminals and all output terminals.

Between terminals of different output circuits.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

Insulation

• Reinforced insulation

Between power supply or input terminals and output terminals.

Between terminals of different output circuits.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

• No separation

Between power supply and input terminals of the same unit.

Between power supply terminals of CPU Unit and computer connector,

Battery Unit connector, or all Expansion Unit connectors (all interfaces are live parts).

Dielectric strength

2,300 VAC, 50/60 Hz for 1 min (leakage current 1 mA max.):

Between power supply terminals and all output terminals.

Between terminals of different output circuit.

Between all terminals of CPU Unit and all terminals of Expansion I/O Unit.

Vibration resistance

10 sweeps each in X, Y, and Z directions (1 octave/min)

Shock resistance

Weight

CPU Unit with 10 I/O points: Approx. 300 g max.

CPU Unit with 20 I/O points: Approx. 350 g max.

Expansion I/O Unit:

Approx. 120 g max.

Item

ZEN-10C4

@R-@-V2

Communications

RS-485 (two-wire, half duplex)

Synchronization method

Start-stop synchronization

Baud rate

4800, 9600, or 19200 bps

Transmission code

ASCII

Data bit length

7 or 8 bits

Stop bit length

1 or 2 bits

Error detection

Vertical parity (none, even, odd), Block check character (BCC)

Flow control

None

Interface

RS-485

Retry function

None

Node number

0 to 99 (default: 1), XX (broadcasting)