Eaton ELC2 Series User manual

ELC2 Series
Programmable Logic Controllers
INSTRUCTION SHEET
[Applicable Controllers]
ELC2-PC12NNDR
ELC2-PC12NNDT
50
12
6
17
60
2-P
C
2
2
2014
-
10
-
30
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-
SG
Y3
C0
Y1
Y2
Y0
X7
X6
s
s
X2
X4
X5
X3
X1
X0
STOP
RUN
POWER
RUN
ERROR
COM1
37.4 60
3
3
90
13
15
[Figure 1]
2
1
3
4
5
7
8
9
10
12
14
6
11
16 8
12

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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

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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
register
D Data
register
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.

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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
50
0.3 0.7 12
200
300
500
100
1,000
2,000
3,000
Operation(X10)
3
120 VAC, resistive
30 VDC, inductive (t=7ms)
240 VAC, inductive (c os 0.4) ψ =
120 VAC, induc tive (c os =0.4) ψ
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
X0
X1
X2
X5
X6
X7
Y0
Y1
Y2
SG
COM3+
COM3-
X4
C0
Y3
X3
S/ S
X0
X1
X2
X5
X6
X7
Y1
Y2
Y3
SG
COM3+
COM3-
X4
Y0
UP
X3
ZP
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
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.
2A
5
4
5
3
1
2
6
910
8
7[Figure 4]
AC
100- 240V
50 / 60 Hz
Guard
Limit
AC/DC
0V24V
2A
L
N
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
X0
X1
[ Figure 5 ]
+24V
24G
S/S
X0
X1
[ 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]
Y0
Y
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
+
D
Y
C0
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
+
Y
C0
ELC Relay output
[F igure 11 ]
R: 100~120Ω
AC load
C: 0.1~ 0.2 4 uF
RC
R
C1
Y
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
+
ZP
Y
UP
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-
3
4
1 2 2
3
4
○
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.