HITEC ALP842 Operating Instructions Manual

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ALP842

Operating Instructions

∆ ALP842-24V General view

Contents

1. General characteristics.................................................................................... 1

2. Safety summary............................................................................................... 2

3. Wiring guidelines ............................................................................................. 2

4. Maintenance.................................................................................................... 3

5. Using procedure .............................................................................................. 3

6. Mechanical specifications................................................................................ 4

7. Relay outputs................................................................................................... 4

8. Wiring connections........................................................................................... 5

9. Programming ................................................................................................... 6

10. Informations..................................................................................................... 9

1. General characteristics

1.1. Display

4 digits (7 segments) LED RED. Height : 14mm
Messages displayed: When the display exceeds 9999
When the display is less than -1999
During initializing the module (3 secondes)

4 red LEDs for alarm

1.2. Power supply

24 VDC (minimum 20VDC), 5VA

1.3. Setting – Connection

Using the three buttons in front, connection by screw terminals.

1.4. Mémory

Backup all the settings in EEPROM (non-volatile memory).

24 VDC Power

supply

Level Sensor

Pump,…

Alarm…

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1.5. Sensor input

Current : 0 / 20 mA or 4 / 20 mA – Input impedance 100 Ohm
Voltage : 0 / 10 Vdc

1.6. Accuracy

0,05 % +/- 1 digit

1.7. Relay output

4 relay outputs 5 A at 250Vac or 24Vdc
Alarm Types: Alarm high, low, band, overrange, fault signal
adjustable hysteresis
Alarm display LED programmable
Acknowledging alarms programmable (automatic or maintained)

1.8. Sensor power supply

24 VDC available

1.9. Analog output

Copy of the input signal after linearization : 4 / 20 mA or 0 / 5 V or 0 / 10 V
Refresh period : 100 ms

1.10. Terms of service

Operating : 0 to 50°C Relative humidity max : 85 %
Storage : -20 to 75°C

1.11. Electrical insulation

Between the power supply and other inputs / outputs: 2000 V
Between each relay and other inputs / outputs: 2000 V

1.12. Weight : 300 g

1.13. Conformity

EMC : normes EN50081-1, EN50082-1

2. Safety

Before any intervention, be sure to read this entire manual and strictly follow every
precaution to ensure the protection of persons required to handle this product.
Be careful ! Risk of electric shock.

3. Wiring guidelines

• The power supply must be off before any work on the wiring and for the
duration thereof.

• Wiring must conform strictly to the instructions in this manual and the cable
length should be adjusted to the shortest. Make sure each connection.

• Terminate cables with eyelet lugs suitable for M3.5 screws before connecting
them to the terminals.

• To avoid electromagnetic interference using short cables and flexible enough
appropriate section. Section power cables must be greater or equal to 1 mm2
and isolation greater than 1.5 kV

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92

46

4. Maintenance

The equipment must be cleaned regularly with a clean, dry cloth (no detergent) to
avoid obstructing its ventilation grids.

5. Installation guidelines

This equipment is intended to be integrated into a electrical housing.
Wiring terminal block on the back of the device must be accessible to the end user.
No electrical conductor must not come into contact with the internal circuitry of the
device to avoid the risk of electrocution for the operator.
A breaker must be installed between the power source and the device to facilitate the
power-on or off.
This circuit breaker or fuse must be installed so as to be easily accessible to the
operator.
The appliance must not be installed in an environment not meeting the conditions
mentioned in this document.
Protection against over-currents: This unit contains no internal fuse. The installation
of an external fuse 1 A / 275 Vac is highly recommended.
The evacuation of the heat generated by the internal circuitry of the apparatus is
effected by the air vents in the electrical housing. These vents must not be blocked.
I / O device must be connected to loads whose magnitudes (voltage, current, ...)
meet the maximum values specified in this document..

5.1. Mounting

The housing is built to DIN panel 96 x 48.

• Prepare the panel with opening according to the dimensions shown below
(mm).

• Remove the brackets and insert the unit into the opening and cut. Reinsert the
brackets then screw them so well plate rubber seal against the panel

Be careful ! Once in position, the unit should not be too close to a
heat source or exposure to vapors or spray liquids.
Electromagnetic precautions: Power cables connected to terminals
must be kept away from any electromagnetic source possible.

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6. Size (mm)

7. Relay outputs

4 relay outputs have a common point: COM
Each has a point normally open: NO
They support loads 5 A 230Vac or 24Vdc.
Below, here's an example of wiring of 4 loads to the mains.

Side view

Top view

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charge 1

Neutre

NO1 (12)

NO2 (11)

NO3 (14)

NO4 (15)

Phase

COM (16)

charge 2

charge 3 charge 4

ALP842

∆ Wiring 4 charges (230Vac, 5A max) on the 4 relays

8. Wiring connections

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 N L

NO1 NO2 NO3 NO4 COM GND +24V

230VAC

Sensor power

supply

4 relay outputs

mA+ V+

mV+

V-

mA-

+ -

Analog output

PT100

Rear view (terminals)

+

-

Numéro

Description

L et N Phase and neutral (Power supply 230Vac)

2 + Input signal current (mA)
3 + Input signal voltage (V)
4 + Input signal voltage (mV)
5 - Input signal current or voltage
8 + Analog output

9 - Analog output
12 Relay 1 : Point normally open (NO)
13 Relay 2 : Point normally open (NO)
14 Relay 3 : Point normally open (NO)
15 Relay 4 : Point normally open (NO)
16 Relay common (COM)
17 Ground 24VDC power supply for the sensor (GND)
18 + 24VDC power supply for the sensor (+24V)

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8.1. Connecting a transmitter 4/20mA powered by the 24VDC internal

1 2 3 4 5 6 7 8 9 10

11 12 13 14 15 16 17 18 - +

GND +24V

24VDC

mA+

mA-

+

-

transmitter

9. Programming

To enter or exit program mode, press together on

+ for 3 seconds.

To view next/previous function on the same level ,

press on or .

To increase the value press together on + .

To decrease the value press together on + .

There are several "levels" of programming, LUL.0 to LUL.7 here are the descriptions.

Level Description

LUL.0 Sensor input programming
LUL.1, LUL.2, LUL.3, LUL.4 Relay outputs programming
LUL.6 Analog output programming
LUL.7 Programming lock

To change from one level to another, press on + or + when LUL
is displayed.

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9.1. Programming of the level 0 : LUL.0 – Signal input

Parameter Affichages

Description / Range

Current input (0/20 mA or 4/20 mA)

Voltage input (0/10 VDC)
PT100 input
Voltage input -5 mV à 56 mV

Input type

Voltage input from 0 mV to 100 mV
Point position (1, 0.1, 0.01, 0.001)

Resolution

(Filter time constant)

Digital filter time constant : for damping the
too fast variations of the signal. 1 to 99
seconds (or OFF). If you notice the "noise" in
the signal, increase this value.

(Display update rate)

Display update rate (0.5 to 6.0 sec).

Zero offset from -200 to +200). (To re-adjust
the measurement for example)
Number of scaling points for linearization.

For a simple straight line, leave 2

Display value scaling point 0 (low).
(mA) Input value scaling point 0 (low).
Display value scaling point 1 (high)

(mA) Input value scaling point 1 (high)

Note : For SCLP > 2, the other points are (DSC2,ISC2), (DSC3,ISC3),…

No reverse

Reverse scaling

Reverse scaling

Set point high limit

Set point low limit

Number of programs

No reset

(RESET)

All parameters set to factory setting

9.2. Programming of level 1 : LUL.1 – Relay output 1 (idem for LUL.2, 3, 4)

Parameter Display Description

Program number
Alarm high limit (mode HA or BAND).

Alarm low limit (en mode LA or BAND).
Alarm hysteresis

RUN P

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Delay timer before switching (from 0 to 99.59
min.sec).
Alarm off

High alarm
Low alarm
Band alarm : snaps if the signal is above HA

or below LA
Fault diagnosis alarm

Alarm mode

AFail output alarm
The alarm clears when the cause

is no longer

present.

Latch Alarm

Alarm status will be preserved at any process

condition
Alarm activates when the system boots

Hold Alarm

The alarm is inhibited in the initialization
phase to prevent it activates if the signal

has

not yet reached its steady value.
(The most common case)
No alarm  relay inactive (NO)
Alarme  relay active

Relay status

No alarm  relay active (NF)*
Alarme  relay inactive
* Attention !!! In case of power failure, the
relay is anyway open (NO).
No annunciator.

Red LED blinking (0.2 seconde).

Alarm annunciator

LED blinking + display alarm

9.3. Programming of level 6 : LUL.6 – Analog output

Parameter Display Description / Range

The copied signal is proportional

to the input

signal.

manual mode

Manual mode. The output signal is constant
determined by the parameter PTAG (see
below).
Low scaling point

High scaling point
In case of sensor failure the output can be s

et

to high value of range

Sensor error level

In case of sensor failure the output can be set

to low value of range
Percentage of 0.00 to 100.0% of the desired
value of the analog output

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9.4. Programming of level 7 : LUL.7 – Locked system

Parameter Display Description / Range

User identification (0000 à 9999).
Unlimited access to parameters of level 0
Read access level 0

(LK-0)

No access to parameters of level 0

LK-1, LK-2, LK-3, LK-4, LK-5 : Same parameters

Unlilited to parameters of level 6
Read access level 6.

(LK-6)

No access to parameters of level 6
N : Do not change

(nouveau mot de passe)

Y : Change the password
New password (0000 à 9999).

10. More information

10.1. Option to display alarms

Press on to view the status of alarms.
Press on + to see the next alarm.

(Only active alarms are displayed)

Press on + to acquit the displayed alarm. (Case « Latch : ON »)

Example of display for alarm 1 :

: Low Alarm
: High Alarm
: Input signal failure (Fail Output)
: Alarm system failure (Fail Diagnosis)

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Input
(mA)

Display
(digits)

ISC0

4.00

ISC1

20.00

DSC1 : 1000

DSC0 : 0

RSCL = NO

(No reversal)

10.2. Linearization (Scale setting)

10.2.1 Common case : rectangular tank 2 points

The diagram below gives an example of setting for a display level 0 to 1000 for an
input signal from 4.00 to 20.00 mA.

SCLP

= 2

Point 0 :

ISC0

= 04.00 ;

DSC0

= 0

Point 1 :

ISC1

= 20.00 ;

DSC1

= 1000

With ISC1 = 20, DSC1 corresponds to the full scale of the sensor.

∆

Usual scaling : 2 points right lane

It's possible to invert the way of linearization in choosing
RSCL = YES. In this case, the display will be 1000 for 4.00 mA and 0
for 20.00 mA.

To display the

volume

of the tank (V), if the heigh (H) is different from the full scale

of the sensor (PE), enter the following points :

SCLP

= 2

Point 0 :

ISC0

= 04.00 ;

DSC0

= 0

Point 1 :

ISC1

= 20.00 ;

DSC1

= (PE x V) / H

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10.2.2 Case for cylindrical tank : 10 points

In this case, it should enter the number of points desired in SCLP, then enter them in
order.
The diagram below shows an example of a 5-point linearization (0 to 4).
In this case, the parameters are:

SCLP = 5
Point 0 : ISC0 = 04.00 ; DSC0 = 0
Point 1 : ISC1 = 06.00 ; DSC1 = 1500
Point 2 : ISC2 = 12.00 ; DSC2 = 5000
Point 3 : ISC3 = 14.00 ; DSC3 = 8500
Point 4 : ISC4 = 20.00 ; DSC4 = 9999

The system will ensure that the curve is increasing. That is to say, if
we look for example DSC2 up above 8500 (DSC3 value), then DSC3
will also be increased in order to stay on DSC2 least.

Input
(mA)

Display
(digits)

ISC0

4.00

ISC1

6.00

ISC2

12.00

ISC3

14.00

ISC4

20.00

DSC4 : 9999
DSC3 : 8500

DSC2 : 5000

DSC1 : 1500

DSC0 : 0

∆ Linearization at several points

You will find assistance in calculating linearization at the web address :

www.hitec.fr/line

(Calculation of the volume from a chart height / volume, or a cylindrical tank).