E5ZN

5

■ Communications

(Host Communications)

Note: The baud rate, data bit length, stop bit length, and vertical par-

ity can all be set independently as host communications set-

tings.

: Default setting values

■ Setting Display Unit (Order

Separately)

■ Current Transformer (CT) (Order

Separately)

■ Heater Burnout Alarm

Note: 1. Use the K8AC-H Digital Heater Burnout Alarm Detector for

burnout detection of 3-phase heaters.

2. If the heater burnout alarm setting is set to 0.0 A, the alarm

is always OFF, and if it is set to 50.0 A the alarm is always

ON.

3. If the ON time for control output is less than 190 ms, heater

burnout detection and heater current measurement will not

be performed.

Transmission line

connection method

RS-485 multipoint

Communications

method

RS-485 (2-wire, half-duplex)

Synchronization

method

Start-stop synchronization

Baud rate

4,800, 9,600, 19,200, or 38,400 bps

Transmission code

ASCII

Data bit length

(See note.)

7 or 8 bits

Stop bit length (See

note.)

1 or 2 bits

Error detection

Vertical parity (none, even, odd)

BCC (block check character)

Flow control

None

Interface

RS-485

Retry function

None

Number of Units that

can be connected in

parallel

16 Units max. (32 channels)

Power supply voltage

24 VDC

Allowable voltage

range

85% to 110% of the rated power supply

voltage

Power consumption

Approx. 1 W

Display method

7-segment digital display and single-color

display

Ambient operating

temperature

−10 to 55°C (with no icing or condensa-

tion)

For 3 years of assured use:

−10 to 50°C

Ambient operating hu-

midity

25% to 85%

Storage temperature

−25 to 65°C (with no icing or condensa-

tion)

Communications

method

RS-485 (half-duplex)

Communications for-

mat

Special protocol

Insulation resistance

20 M

Ω min. (at 500 VDC)

Dielectric strength

1,500 VAC for 1 minute at 50 or 60 Hz (be-

tween unlike terminals of charged parts)

Vibration resistance

and Z directions

Shock resistance

±Z directions

Enclosure ratings

Front panel: IP50

Rear case: IP20

Terminal case: IP00

Memory protection

EEPROM (non-volatile memory) (Number

of writes: 100,000)

Weight

Approx. 100 g

Mounting bracket: Approx. 10 g

Dielectric strength

1,000 VAC (1 minute)

Vibration resistance

Weight

E54-CT1: Approx. 11.5 g

E54-CT3: Approx. 50 g

Accessories

(E54-CT3 only)

Armature (2)

Plug (2)

Maximum heater

current

Single-phase, 50 A AC (See note 1.)

Input current

readout accuracy

±5% FS ±1 digit max.

Heater burnout

alarm setting range

0.0 to 50.0 A (in units of 0.1 A)

(See note 2.)

Minimum detection ON

time

190 ms (See note 3.)