Eaton ELC2 Series User manual

ELC2 Series

Programmable Logic Controllers

INSTRUCTION SHEET

[Applicable Controllers]

ELC2-PC12NNDR

ELC2-PC12NNDT

2-P

2014

IL050003EN

- 1 -

The ELC2-PCs are 12-point (8DI + 4DO) controllers, offering various instructions and

with 16k steps program memory, able to connect to all ELC series extension modules

and high-speed extension modules, including digital I/O (max. 224 I/O points) and

analog modules (for A/D, D/A conversion and temperature measurement). Two points of

100 kHz and two points of 10 kHz high-speed pulse outputs are included. ELC2-PC

series controllers are small in size and easy to install. Users do not have to install any

batteries in ELC2-PCs. The ELC programs and the latched data are stored in the

high-speed flash memories.

EN ELC2-PC is an OPEN-TYPE device. It should be installed in a control cabinet free

of airborne dust, humidity, electric shock and vibration. To prevent

non-maintenance staff from operating ELC2-PC, or to prevent an accident from

damaging ELC2-PC, the control cabinet in which ELC2-PC is installed should be

equipped with a safeguard. For example, the control cabinet in which ELC2-PC is

installed shall require a tool or key to be opened.

EN DO NOT connect AC power to any of I/O terminals, otherwise serious damage

may occur. Please check all wiring again before ELC2-PC is powered up. After

ELC2-PC is disconnected, Do NOT touch any terminals in a minute. Make sure

that the ground terminal on ELC2-PC is correctly grounded in order to prevent

electromagnetic interference.

FR ELC2-PC est un module OUVERT. Il doit être installé que dans une enceinte

protectrice (boitier, armoire, etc.) saine, dépourvue de poussière, d’humidité, de

vibrations et hors d’atteinte des chocs électriques. La protection doit éviter que

les personnes non habilitées à la maintenance puissent accéder à l’appareil (par

exemple, une clé ou un outil doivent être nécessaire pour ouvrir a protection).

FR Ne pas appliquer la tension secteur sur les bornes d’entrées/Sorties, ou l’appareil

ELC2-PC pourra être endommagé. Merci de vérifier encore une fois le câblage

avant la mise sous tension du ELC2-PC. Lors de la déconnection de l’appareil,

ne pas toucher les connecteurs dans la minute suivante. Vérifier que la terre est

bien reliée au connecteur de terre afin d’éviter toute interférence

électromagnétique.

Product Profile & Outline

Unit: mm

1. POWER, RUN, ERROR, COM1 indicator 9. Nameplate

2. RUN/STOP switch 10. Right-side extension port

3. VR0/VR1 11. DIN rail mounting slot (35mm)

4. I/O terminals and COM3 comm. port (RS-485) 12. Extension unit clip

5. I/O point and COM2, COM3 indicator 13. COM2 communication port (RS-485)

6. COM1 communication port (RS-232) 14. Mounting rail for extension module

7. DIN rail clip 15. DC power input

8. Mounting hole for extension module 16. Left-side module connection port

COM1

COM3+

COM3-

STOP

RUN

POWER

RUN

ERROR

COM1

37.4 60

[Figure 1]

16 8

- 2 -

Specifications

Item Specification

Control method Stored program, cyclic scan system

I/O processing method Batch processing method (when END

instruction is executed)

Execution speed LD instructions – 0.54s, MOV instructions –

3.4s

Program language Instruction List + Ladder + SFC

Program capacity 15872 steps

X External inputs X0~X377, octal number system,

256 points max.

Y External outputs Y0~Y377, octal number system,

256 points max.

Tot al

480+32

I/O(*4)

General

M0~M511, 512 points (*1)

M768~M999, 232 points (*1)

M2000~M2047, 48 points (*1)

Latched M512~M767, 256 points (*2)

M2048~M4095, 2048 points (*2)

M Auxiliary

relay

Special M1000~M1999, 1000 points,

some are latched

Tot al

4096 points

T0~T126, 127 points (*1)

T128~T183, 56 points (*1)

T184~T199 for Subroutines, 16

points (*1)

100ms

(M1028=ON,

T64~T126: 10ms) T250~T255(accumulative), 6

points (*1)

T200~T239, 40 points (*1)10ms

(M1038=ON,

T200~T245: 1ms)

T240~T245(accumulative), 6

points (*1)

T Timer

1ms

T127, 1 points, (*1)

T246~T249(accumulative), 4

points (*1)

Tot al

256 points

C0~C111, 112 points (*1)

C128~C199, 72 points (*1)

16-bit count up

C112~C127, 16 points (*2)

C200~C223, 24 points (*1)

32-bit count up/down C224~C232, 9 points (*2)

Tot al

233 points

C235~C242, 1 phase 1 input, 8

points (*2)

Software C233~C234, 2 phase 2 input, 2

points (*2)

C243~C244, 1 phase 1 input, 2

points (*2)

C245~C250, 1 phase 2 input, 6

points (*2)

C Counter

32-bit

high-speed

count

up/down Hardware

C251~C254 2 phase 2 input, 4

points (*2)

Tot al

22 points

Initial step point S0~S9, 10 points (*2)

Zero point return S10~S19, 10 points (use with

IST instruction) (*2)

Latched S20~S127, 108 points (*2)

General S128~S911, 784 points (*1)

Bit

contacts

S Step

point

Alarm S912~S1023, 112 points (*2)

Total 1024

points

- 3 -

Item Specification

T Current value T0~T255, 256 words

C0~C199, 16-bit counter, 200 words

C Current value C200~C254, 32-bit counter, 55 words

General

D0~D407, 408 words (*1)

D600~D999, 400 words (*1)

D3920~D9799, 5880 words (*1)

Latched D408~D599, 192 words (*2)

D2000~D3919, 1920 words (*2)

Special D1000~D1999, 1000 words,

some are latched

Right-side special

module

D9900~D9999, 100 words (*1)

(*5)

Left-side special

module

D9800~D9899, 100 words (*1)

(*6)

Word

D Data

Index E0~E7, F0~F7, 16 words (*1)

Tot al

10000

points

N Master control loop N0~N7, 8 points

P Pointer P0~P255, 256 points

External interrupt

I000/I001(X0), I100/I101(X1), I200/I201(X2),

I300/I301(X3), I400/I401(X4), I500/I501(X5),

I600/I601(X6), I700/I701(X7), 8 points (01:

rising-edge trigger , 00: falling-edge

trigger )

Timer interrupt I602~I699, I702~I799, 2 points (Timer

resolution = 1ms)

High-speed counter

interrupt

I010, I020, I030, I040, I050, I060, I070, I080,

8 points

Pointer I Interrupt

service

Communication

interrupt

I140(COM1), I150(COM2), I160(COM3), 3

points (*3)

K Decimal

K-32,768~K32,767 (16-bit operation)

K-2,147,483,648~K2,147,483,647 (32-bit

operation)

Constant

H Hexadecimal H0000~HFFFF (16-bit operation)

H00000000~HFFFFFFFF (32-bit operation)

Serial ports

COM1: built-in RS-232 (Client/Server)

COM2: built-in RS-485 (Client/Server)

COM3: built-in RS-485 (Client/Server)

COM1 is typically the programming port.

Real time clock Year, Month, Day, Week, Hours, Minutes,

Seconds

Special I/O modules

Right side: Up to 8 I/O modules can be

connected

Left side: Up to 8 high-speed I/O module can

be connected

File register K0~K4999, 5000 points (*2)

Notes:

1. Non-latched area cannot be modified

2. Latched area cannot be modified

3. Please refer to the table above for more information about serial ports.

4. There are 8 input points (X0~X7) and 4 output points (Y0~Y3) in ELC2-PC.

ELC2-PC occupies 16 input points (X0~X17), and 16 output points (Y0~Y17).

Extension input points start from X20, and extension output points start from Y17.

5. If ELC2-PC is connected to a right-side special module, and M1183 is off, the range

of data registers can be used. Every special module connected to ELC2-PC

occupies ten data registers.

6. If ELC2-PC is connected to a left-side special module, and M1182 is off, the range of

data registers can be used. Every special module connected to ELC2-PC occupies

ten data registers.

- 4 -

Electrical Specifications

Model

Item ELC2-PC12NNDR ELC2-PC12NNDT

Power supply voltage

24 Vdc (-15 to 20%)

(with reverse polarity protection on the DC input power)

ELC-PS01: input 100 to 240 Vac, output 24 Vdc/1A ELC-PS02: input

100 to 240Vac, output 24Vdc/2A

Connector European standard removable terminal block (Pin pitch: 3.5mm)

Operation Maximum power loss time is 10ms or less.

Inrush current Max. 7.5 A@24 Vdc, I2t = 0.25 A2S

Fuse capacity 2.5 A/30 Vdc, Polyswitch

Power consumption 1.8 W 1.5 W

Power protection With reverse polarity protection on the DC input power

Insulation resistance > 5 MΩ(all I/O point-to-ground: 500 Vdc)

Noise immunity

ESD (IEC 61131-2, IEC 61000-4-2): 8kV Air Discharge

EFT (IEC 61131-2, IEC 61000-4-4): Power Line: 2kV, Digital I/O: 1kV,

Analog & Communication I/O: 1kV

RS (IEC 61131-2, IEC 61000-4-3): 26MHz ~ 1GHz, 10V/m

Grounding

The diameter of grounding wire cannot be smaller than the wire

diameter of terminals L and N (All ELC2 controllers should be

grounded directly to the ground pole).

Operation / storage Operation: 0 to 55°C (temp.), 5 to 95% (humidity), Pollution degree 2

Storage: -25 to 70°C (temp.), 5 to 95% (humidity)

Agency approvals

UL508

European community EMC Directive 89/336/EEC and Low Voltage

Directive 73/23/EEC

Vibration / shock

resistance

International standards: IEC61131-2, IEC 68-2-6 (TEST

Fc)/IEC61131-2 & IEC 68-2-27 (TEST Ea)

Weight (g) 140g 131g

Input PointsSpec.

Items 24 Vdc (-15 to 20%) single common port input

Input No. X0 to X2 X3 to X7

Input type DC (SINK or SOURCE)

Input current (±10%) 24 Vdc, 5 mA

Input impedance 4.7 kΩ

Max. frequency 100 kHz 10 kHz

Off On > 15 VdcAction

level On Off < 5 Vdc

Off On < 2.5 μs < 20 μsResponse

time On Off < 5 μs < 50 μs

Filter time Adjustable within 0 ~ 20ms by D1020 (Default: 10ms)

Output PointsSpec.

Items Relay Transistor

Output No. Y0 to Y3 Y0, Y2 Y1, Y3

Max. frequency 1 Hz 100 kHz 10 kHz

Working voltage 250 ac, < 30 Vdc 5 to 30 Vdc #1

Resistive 1.5 A/1 point (5 A/COM) 0.5 A/1 point (2 A/COM)

Inductive #2 15 W (30 Vdc)

Max. load

Lamp 20 WDC/100 WAC 2.5 W (30 Vdc)

Off On 2 μs #3 20 μs #3Response

time On Off Approx. 10 ms 3 μs #3 30 μs #3

#1: UP, ZP must work with external auxiliary power supply 24 Vdc (-15 to +20%), rated

consumption approx. 1mA/point.

#2: Life curves

Contact

current(A)

0.5

0.1 0.2

0.3 0.7 12

200

300

500

100

1,000

2,000

3,000

Operation(X10)

120 VAC, resistive

30 VDC, inductive (t=7ms)

240 VAC, inductive (c os 0.4)

120 VAC, induc tive (c os =0.4)

30 VDC,

inductive

(t=40ms )

[ Figure 2 ]

- 5 -

#3: Load = 0.5A

Model Name & I/O Configuration

Standard functional ELC

Input Output I/O Configuration

Model Point Type Point Type Relay Transistor

ELC2-PC12NNDR Relay

ELC2-PC12NNDT

8 DC

(Sink or source) 4

Transistor

S/ S

COM3+

COM3-

S/ S

COM3+

COM3-

Dimension & Installation

Please install the ELC2 in an enclosure with

sufficient space around it to allow heat dissipation.

See [Figure 3].

Direct Mounting: Use M4 screw according to the

dimension of the product.

DIN Rail Mounting: When mounting the ELC2 to

35mm DIN rail, be sure to use the retaining clip to

stop any side-to-side movement of the ELC2 and

reduce the chance of wires being loose. The

MPU D

D>50mm

[ F ig ure 3 ]

retaining clip is at the bottom of the ELC2. To secure the ELC2 to DIN rail, pull down

the clip, place it onto the rail and gently push it up. To remove the ELC2, pull the

retaining clip down with a flat screwdriver and gently remove the ELC2 from DIN rail.

Wiring

1. Use 22-16AWG (1.5mm) single or multiple core wire

on I/O wiring terminals. See the figure in the right hand

side for its specification. ELC2 terminal screws should be

tightened to 1.90 kg-cm (1.65 in-lbs) and please use only

60/75ºC copper conductor.

22-16AWG

< 1.5mm

2. DO NOT wire empty terminal. DO NOT place the I/O signal cable in the same wiring

circuit.

3. DO NOT drop tiny metallic conductors into the ELC2 while screwing and wiring

terminals. When finished wiring, remove off the protective sticker on the heat

dissipation opening to ensure normal heat dissipation of the ELC2.

Power Supply

The power input of ELC2-PC is DC. When operating ELC2-PC, please note the

following points:

1. The power is connected to two terminals, 24 VDC and 0 V, and the range of power is

20.4 to 28.8 Vdc. If the power voltage is less than 17.5 Vdc, the ELC2 will stop

running, all outputs will go off, and the ERROR indicator will start to blink

continuously.

2. A power shutdown for less than 10ms will not affect the operation of the ELC2.

However, a shutdown time that is too long or a drop of power voltage will stop the

operation of the ELC2, and all outputs will go off. When the power returns to normal

status, the ELC2 will automatically resume the operation. (Please take care of the

latched auxiliary relays and registers inside the ELC2 when doing the programming).

- 6 -

Safety Wiring

Eaton’s power supply modules ELC-PS01 orELC-PS02 are the suitable 24Vdc power

supplies for ELC2-PC. We suggest you install a protective circuit at the power supply

terminal to protect ELC-PS01 or ELC-PS02. See the figure below.

910

7[Figure 4]

100- 240V

50 / 60 Hz

Guard

Limit

AC/DC

0V24V

ELC- PS01 /EL C-P S02

+24V

24G

+24V

24G

MPU

(DC supply)

DI/D0

Module

AC power supply:100 ~ 240VAC, 50/60Hz Breaker

Emergency stop: This button cuts off the system power supply when accidental

emergency takes place.

Power indicator AC power supply load

Power supply circuit protection fuse (2A) ELC-PS01/ELC-PS02

DC power supply output: 24 VDC, 500 mA MPU (main processing unit)

Digital I/O module

Input Point Wiring

There are two types of DC inputs, SINK and SOURCE. (See the example below. For

detailed point configuration, please refer to the specification of each model.)

DC Signal IN – SINK mode

Input point loop equivalent circuit

DC Signal IN – SOURCE mode

Input point loop equivalent circuit

24G

+24V

S/S

[ Figure 5 ]

+24V

24G

S/S

[ Figure 6 ]

Output Point Wiring

1. ELC2-PC series controllers have either relay or transistor outputs. Please note the

connection of shared terminals when wiring output terminals.

2. Relay output terminals, Y0 to Y3 of relay models use C0 common port. See [Figure

7]. When the output points are enabled, their corresponding indicators on the front

panel will be on.

3. Transistor output terminals, Y0 to Y3 of transistor models use UP, ZP common port.

See [Figure 8].

[Figure 7]

C0 Y0 Y1 Y2 Y3

[Figure 8]

1Y2 Y3

UP ZP

- 7 -

4. Isolation circuit: The optical coupler is used to isolate signals between the circuit

inside ELC and input modules.

Relay (R) output circuit wiring

ELC Relay output

VDC

Smallerpower

D: 1 N40 01 di od e o r e qu iva le nt c o mp on en t

[Figure 10a]

D: 1N4001 diode orequivalent component

ELC Relay output

ZD: 9V Zener, 5W

Larger power and

freq uent o n/o ff

[Figure 1 0b]

ZDD

VDC

ELC Relay output

[F igure 11 ]

R: 100~120Ω

AC load

C: 0.1~ 0.2 4 uF

DC power supply Emergency stop: Uses external switch

Fuse: 5 to10A fuse at the shared terminal of output contacts to protect the output circuit

Transient voltage suppressor (SB360 3A 60V): Extends the life span of contact.

1. Diode suppression of DC load: Used when in smaller power [Figure 10a]

2. Diode + Zener suppression of DC load: Used when in larger power and frequent On/Off

[Figure 10b]

Incandescent light (resistive load)

Absorber: Reduces the interference on AC load [Figure 11]

Transistor (T) output circuit wiring

D: 1N 4 00 1 d io de or eq ui v al en t comp on en t

ZD: 9V Zener, 5W

Larger power and

frequent on/off

[Figure 13 b]

ELCTransistor

output

ZD D

VDC

DC power supply Emergency stop Circuit protection fuse

- 8 -

The output of the transistor model is “open collector”. If Y0/Y1 is set to pulse output, the

output current has to be bigger than 0.1 A to ensure normal operation of the model.

1. Diode suppression: Used when in smaller power [Figure 13a]

2. Diode + Zener suppression: Used when in larger power and frequent On/Off [Figure 13b]

Manually exclusive output: For example, Y2 and Y3 control the forward running and reverse

running of the motor, forming an interlock for the external circuit, together with the ELC

internal program, to ensure safe protection in case of any unexpected errors.

RS-485 Wiring

[Figure 14]

D+ D- SG D+ D- SG SG D+ D-

1 2 2

○

1Client node ○

2Server node

○

3Terminal resistor ○

4Shielded cable

Note:

1. Terminal resistors are suggested to be connected to client node and the last server node

with resistor value of 120Ω.

2. To ensure communication quality, please apply double shielded twisted pair cable (20AWG)

for wiring.

Precision of the RTC (Second/Month)

Temperature

(°C/°F) 0/32 25/77 55/131

Maximum error

(Second) -117 52 -132

Duration in which the RTC is latched: One week

Troubleshooting & Indicator Description

Based on the indicators on the front panel, please check the following for errors:

☼POWER indicator

When ELC2 is powered, the POWER LED indicator on the front panel will be on

(in green). If this indicator is not on or the ERROR indicator keeps flashing when

ELC2 is powered indicates that the power supply +24V are insufficient or DC

power supply 24V is overloaded. In this case, change another 24V DC power

supply. If the indicator is still off at this time, your ELC2 is malfunctioned. Send

your ELC2 back to your distributor for repair.

☼RUN indicator

Check your ELC2 status. When ELC2 is running, this indicator will be on. You can

use ELC-HHP, the ladder diagram editing program or the switch on the panel to

RUN or STOP ELC2.

☼ERROR indicator

If you enter an incorrect program into ELC2 or use instructions or devices that

exceed their range, this indicator will flash (approx. every 1 second). When this

happens, you have to obtain the error code from D1004 and save the address

where the error occurs in register D1137 (if the error is a general circuit error, the

address of D1137 will be invalid). Find out the cause of the error, amend the

program and resend the program to ELC2. If you cannot connect to ELC2 and this

indicator keeps flashing quickly (approx. every 0.2 second), it means that the

24Vdc power voltage is insufficient. Please check if the 24V DC power supply is

overloaded.

If the ERROR indicator is on, you have to check the special relay M1008. If

M1008 is on, it indicates that the execution time of program loop exceeds the

preset time-out (in D1000). In this case, turn the RUN/STOP switch to STOP,

check the special register D1008 and obtain the location in the program where the

time-out takes place. Please refer to the WDT instruction to solve this problem.

After amending the program, you only need to resend the program to stop the

indicator from flashing. If the indicator still keeps flashing at this time, switch off

the power and check if there is any interference existing or conductive matter

- 9 -

inside ELC2.

For details of error codes (in D1004, hex coding), see “ELC System Manual:

Programming”.

☼Input indicator

On/Off of input point is indicated by input indicator or monitored by ELC-HHP.

When the action condition of the input point is true, this indicator will be on. If

abnormality is identified, check if the indicator and input circuit are normal. Use of

electronic switch with too much electricity leakage often results in unexpected

actions of the input point.

☼Output indicator

On/Off of output point is indicated by the output indicator. When the output

indicator (On/Off) does not correspond to the action of its load, please be aware of

the following:

1. The output contact may be melted or blocked due to an over loaded or

short-circuited load, which will result in poor contact.

2. If you are suspicious that the output point may execute an undesired action,

check the output wiring circuit and whether the screw is properly tightened.

☼COM1, COM2, and COM3 indicators

If the COM1 LED indicator is On, it means that COM1 port is receiving data.

If the COM2/COM3 LED indicator is On, it means that COM2/COM3 is sending

data.

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