MOELLER EASY721-DC-TC Technical data

Type: EASY721−DC−TC
Article No.: 274121

Ordering information

Power supply V DC 24 V DC

Description

12 digital inputs (4 inputs available as analog inputs)•
8 transistor outputs•
LCD display•
Operating buttons•
Screw terminals•
Timer•
Can be expanded using easy expansion units•

Notes concerning the product group

Backup of real−time clock (only for appropriate devices)

Backup time (hours)

Operating time (years)

1

General

EN 55011, EN 55022,

Standards

IEC/EN 61000−4, IEC
60068−2−6, IEC

60068−2−27
Dimensions (W × H × D) mm 107.5 × 90 × 58 (6 PE)
Weight kg 0,3

Top−hat rail IEC/EN 60715,
Mounting

35 mm or screw fixing using

fixing brackets

ZB4−101−GF1 (accessories)

Terminal capacities

Solid mm
Flexible with ferrule mm

2

0.24 (AWG 22 – 12)

2

0.22.5 (AWG 22 – 12)
Standard screwdriver mm 3.5 × 0.8
Max. tightening torque Nm 0,6

Climatic environmental conditions

−25 to 55, cold as per IEC
Operating ambient temperature °C

60068−2−1, heat as per IEC
60068−2−2

Condensation

Take appropriate measures

to prevent condensation
LCD display (clearly legible) °C 055
Storage °C −40/+70
Relative humidity, non−condensing

(IEC/EN 60068−2−30)

% 5 – 95

Air pressure (operation) hPa 795 – 1080
Corrosion resistance

IEC/EN 60068−2−42

IEC/EN 60068−2−43

4 days

SO

2

4 days

H2S

cm3/m

cm3/m

3

10

3

1

Ambient conditions, mechanical

Pollution degree 2
Degree of protection (IEC/EN

60529)

IP 20

Vibrations (IEC/EN 60068−2−6)
Constant amplitude 0.15 mm Hz 10 – 57
Constant acceleration 2 g Hz 57 – 150
Mechanical shock resistance

(IEC/EN 60068−2−27)

Impacts 18

semi−sinusoidal 15 g/11 ms

2

Drop to IEC/EN 60068−2−31

Drop

height

mm 50

Free fall, packaged (IEC/EN
60068−2−32)

m 1

Mounting position horizontal/vertical

Electromagnetic compatibility (EMC)

Electrostatic discharge (IEC/EN
61000−4−2, Level 3, ESD)

Air discharge kV 8
Contact discharge kV 6
Electromagnetic fields (IEC/EN

61000−4−3, RFI)
Radio interference suppression (EN

55011)

V/m 10

EN 55011 Class B, EN

55022 Class B
Burst pulses (IEC/EN 61000−4−4,

level 3)
Supply cables kV 2
Signal lines kV 2
High−energy pulses (surge)

(IEC/EN 61000−4−5)

kV

2 (supply cables,

symmetrical, EASY...AC)
High−energy pulses (surge)

(IEC/EN 61000−4−5, level 2)

kV

0.5 (supply cables,

symmetrical, EASY...DC)
Immunity to line−conducted

interference to (IEC/EN

V 10

61000−4−6)

Insulation resistance

Clearance in air and creepage
distances

EN 50178, UL 508, CSA

C22.2, no. 142
Insulation resistance EN 50178

Backup/accuracy of the real−time clock

Accuracy of the real−time clock Normally ± 5 (± 0.5 hyear)

Repetition accuracy of timing relays

Accuracy of timing relays (of
values)

% ± 1

Resolution
Range “S” ms 10
Range “M:S” s 1
Range “H:M” min 1

Retentive memory

Write cycles of the retentive
memory

Power supply

3

1000000 (106)

Rated operational voltage U

e

V 24 DC (−15/+20%)
Admissible range V DC 20,4 – 28,8
Residual ripple % 5
Input current
Input current 115/230 V AC mA Normally 140
Voltage dips (IEC/EN 61131−2) ms 10
Heat dissipation W Normally 3.5

Digital inputs 24 V DC

Number 12
Inputs can be used as analog

inputs

4 (I7, I8, I11, I12)

Status indication LCD−display (if present)
Potential isolation
From power supply No
Between digital inputs No
From the outputs Yes
Rated operational voltage U
On 0 signal U

On 1 signal U

e

e

e

V DC 24
V DC < 5 (I1 – I12, R1 – R12)

V DC

> 15.0 (I1 – I6, I9, I10), > 8.0

(I7, I8, I11, I12)
Input current on 1 signal
I1 to I6 mA 3.3 (at 24 V DC)
I7, I8 mA 2.2 (at 24 V DC)
I9, I10 mA 3.3 (at 24 V DC)
I11, I12 mA 2.2 (at 24 V DC)
Delay time from 0 to 1
Debounce ON ms 20
Debounce OFF ms Normally 0.25 (I1 – I12)
Delay time from 1 to 0
Debounce ON ms 20
Cable length (unscreened) m 100
Frequency counter
Quantity 2 (I3, I4)
Counter frequency kHz < 1
Pulse shape Square
Pulse pause ratio 1:1
Rapid counter inputs
Number 2 (I1, I2)
Counter frequency kHz < 1

4

Pulse shape Square
Pulse pause ratio 1:1

Analog inputs

Quantity 4 (I7, I8, I11, I12)
Potential isolation
From power supply No
From the digital inputs No
From the outputs Yes
From the PC interface, memory

card NET network, EASY−Link

No

Input type DC voltage
Signal range V DC 0 – 10
Resolution, analog V 0,01
Resolution, digital V 0,01
Resolution, digital Bit 10 (value 0 – 1023)
Input impedance k 11,2
Accuracy of actual value
Two EASY devices % ± 3
Within a single device % ± 2, ± 0.12 V

Debounce ON: 20;
Conversion time, analog/digital ms

Debounce OFF: every cycle

time
Input current mA < 1
Cable length screened m < 30

Transistor outputs

Number 8
Rated operational voltage U
Admissible range U

e

e

V DC 24

V DC 20,4 – 28,8
Residual ripple % 5
Supply current
On 0 signal Normallymax. mA 1832
On 1 signal Normallymax. mA 24 – 44

Yes (Attention: A
short−circuit will occur if

Protection against polarity reversal

voltage is applied to the
outputs on account of

reverse polarity.)
Potential isolation
From power supply Yes
Potential isolation Yes

5

Rated operational current on 1
signal DC

I

e

A Max. 0.5

Lamp load without R

v

Residual current on 0 signal per
channel

W 5

mA < 0,1

Max. output voltage
On 0 signal with external load < 10

M

V 2,5

On 1 signal with Ie = 0.5 A V U = Ue −1 V

Yes, thermal (analysis via
Short−circuit protection

diagnostics input I16, I15;

R15, R16)
Short−circuit tripping current for R

10 m

a

A 0.7 Ie 2 per output

Total short−circuit current A 16
Peak short−circuit current A 32
Thermal cutout Yes
Max. operating frequency with

constant resistive load RL < 100 k
(depending on number of active

Ops./h 40000

channels and their load)
Parallel connection of outputs
With resistive load, inductive load

with external suppressor circuit,
combination within a group

Group 1: Q1 to Q4

Group 2: Q5 − Q8

Number of outputs max. 4

2 (Caution! Outputs must be
Max. total current

actuated simultaneously and

for the same length of time.)
Output status indication LCD−display (if present)
Inductive load
Without external suppressor circuit

T

0.95 = 1 ms, R = 48 , L = 16 mH

Utilization factor g 0,25
Duty factor % DF 100
Max. switching frequency f = 0.5 Hz

(max. DF = 50 %)
DC−13,

T0.95 = 72 ms, R = 48 , L = 1.15 H

Operations 1500

Utilization factor g 0,25
Duty factor % DF 100
Max. switching frequency f = 0.5 Hz

(max. DF = 50 %)

6

Operations 1500

T

0.95 = 15 ms, R = 48 , L = 0.24 H

Utilization factor g 0,25
Duty factor % DF 100
Max. switching frequency f = 0.5 Hz

(max. DF = 50 %)

Operations 1500

With external suppressor circuit
Utilization factor g 1
Duty factor % DF 100
Max. switching frequency, max.

duty factor

Operations

Depending on the

suppressor circuit

Analog outputs

Potential isolation
From power supply No
From the digital inputs No
Signal range V DC 0 – 10

Debounce ON: 20;
Conversion time, analog/digital ms

Debounce OFF: every cycle

time

Notes
Dimensions

Notes

For additional Technical Data EASY5... and EASY7... AWB2528−1508GB,

EASY8... AWB2528−1423D

Notes

For inductive loading, without external suppression of the transistor outputs, the following applies:

T

= time in ms, until 95 % of the steady−state current is achieved. T

0.95

0.95

3 × T

= 3 × L/R.

0.65

Data transfer rate in the NET network: bus lengths of 40 m and over only attainable with cables with
additional cross−section and connection adapter.

Dimensions

7

Moeller GmbH, Hein−Moeller−Str. 7−11, D−53115 Bonn
E−Mail: [e-mail], Internet: www.moeller.net, http://catalog.moeller.net
Copyright 2006 by Moeller GmbH. Subject to modifications. HPL−C2006GB−INT V2.3

8