Gram ECO-S - User Manual

To Next Page

V. Aa. Gram A/S

Lysbjergvej 10 Hammelev DK-6500 Vojens

Tel.: +45 74 52 30 75 Fax: +45 74 53 01 64

info@vaagram.dk www.vaagram.com

INSTRUCTIONS FOR

DIFFERENTIAL PRESSURE CONTROL TYPE ECO-S (zone 22)

Program

line no. Function

VAa Gram

value Optional values Explanations

L1 Hour counter 0-65534 hours Hour counter function

L2 Cycle counter 0-65534 cycles Cycle counter function

P1 Break time between

valve activation

(5-30)

1-999 sec. Value for hours and differential

pressure operation

P2 Valve opening time 0.25 0.03-9.99 sec.

P3 After-cleaning time or

cycles

5 1-999 sec.

1-999 cycles

Length of after-cleaning

P4 After-cleaning activa-

tion

1 0=Deactivated

1=Internal

2=External signal

After-cleaning control

P5 Measuring device 3 0=Tenth Pa

1=mmH2O

2=mbar

3=KPa

4=mmHg

Differential pressure view in

Display

P6 Function for after-

cleaning

1 0=Time

1=Cycles

After-cleaning function

P7 Operation hours /

differential pressure

operation

1 0=Operation hours

1=Differential pres-

sure operation

P8 Activation of cleaning 0.90 0-9.99 KPa Differential pressure cleaning

active

P9 Stop of cleaning 0.40 0-9.99 KPa Differential pressure cleaning

stop

P10 Activation of after-

cleaning

0.1 0-9.99 KPa Threshold value for start of after-

cleaning

P11 Activation of relay 1 2.30

G115A/

G116A = 3.00

0-9.99 KPa Alarm relay for ﬁlter change view

P12 Parameter for

dust build-up

0 0=Deactivated

1=Activated

Function for the delay of differen-

tial pressure cleaning start, until

the value has been achieved the

ﬁrst time.

P13 Value for dust build-

1.20 0-9.99 KPa

P16 Selection of function

for relay 1

0 0-1 Relay output function

P17 Function for relay 1 0 0=Normal

1=Hysterese pres-

sure

2=Timing

P18 Value for the function

in relay 1

1 0-9.99 KPa

1-999 sec.

P19 Break time between

valve activation valid

for after-cleaning

Tank must have

sufﬁcient time to

be ﬁlled

1-999 sec. After-cleaning delay between

valve activation

H0 0-calibration of dif-

ferential pressure

sensor

1 - Fan must be turned off and may not rotate.

2 - Filter control must for min. 15 min. be connected to power before cali-

bration may take place.

3 - Press key E for 4-5 sec., until 0 does not ﬂash anymore, press again

key E to conﬁrm calibration.

Rev. 08.20 MUST BE SAVED FOR LATER USE!

Need help?

Do you have a question about the Gram ECO-S and is the answer not in the manual?

The ECOMATIC-S is a differential pressure control device designed for filter cleaning, available in various models (ECOMATIC-S 4/6/12, ECOMATIC-S 20/32, ECOMATIC-S 64/96). It is certified according to the European norm ATEX (94/09/EC) for use in environments with potential explosive atmospheres due to dusts (Zone 22). The device is equipped to provide a normal level of protection in normal conditions and does not form an ignition source during standard functioning. Its anti-explosion method of protection is identified by "tc" (protection method by IP6X rating enclosure), with a maximal external temperature not exceeding 90°C.

Function Description:

The ECOMATIC-S controls filter cleaning based on differential pressure. It offers both manual and automatic cleaning modes. In manual mode, the device drives outputs corresponding to connected valves sequentially, regardless of programming. The outputs are activated one by one, starting from the first, with working time and pause time alternating between activations. In automatic mode, electrovalves are activated if the visualized pressure exceeds the starting cleaning pressure (P8) and are deactivated when the pressure drops to the end cleaning pressure (P9). The cleaning cycle stops when the pressure reaches the end cleaning pressure, provided the ECOMATIC-S is in the pause phase and after the last valve of the cycle.

The device includes a programmable timer for pause time (P1), working time (P2), and value of time or cycles (P3). It also features post-cleaning functions (P4, P6) and allows selection of the unit for pressure measurement (P5) from dPa, mmH2O, mbar, Kpa, or mmHg. Relay outputs (P16, P17, P18) can be configured for minimum or maximum relay activation, with or without hysteresis, and can be time-controlled. A precoating function (P12, P13) is available to ensure optimal filter performance. The device also includes an hour counter (L1) and a cycle counter (L2) for monitoring operational data.

Important Technical Specifications:

Power Supply: 24 Vac, 115 Vac, 230 Vac +/- 15%, 50-60Hz.
Fuses:
- ECOMATIC-S 4/6, 12: F2 general fuse 2A 5x20 rapid, F4 electrovalves power supply fuse 1.6A 5x20 delayed.
- ECOMATIC-S 20/32/64/96: F1 general fuse 2A 5x20 rapid, F2 electrovalves power supply fuse 1.6A 5x20 delayed.
Working Temperature: -10 / +50 °C.
Max Adsorbed Power: 50VA.
Input: 1 opto-isolated input.
Relay Output:
- ECOMATIC-S 4/6/12/20/32/64/96: 1 relay 2A resistant load 115Vac.
- ECOMATIC-S 20/32/64/96: 4 relays 2A resistant load 115Vac.
Electrovalves Output: Triac outputs with activation/deactivation zero-crossing, 24, 115 or 230 Vac and 24Vdc with max. current 2A.
Timer Precision: Pause time (0.1 sec), Working time (0.01 sec), Post Cleaning time (0.1 sec).
Pressure Measurement Units: dPa, mmH2O, mbar, Kpa, mmHg.
Pressure Measurement Ranges:
- dPa: from -99 to +999
- mmH2O: from -99 to +999
- mbar: from -9.9 to +99.9
- Kpa: From -0.99 to +9.99
- mmHg: from -7.5 to +75.0
Pressure Precision: +/- 1% F.S., +/- 1 digit.
Broken Pressure: 0.5 bar (5000 mmH2O).
Analog Output (optional):
- Current Output: 4.0 to +20.0 mA (standard) / 0.0 to +20.0 mA (optional), +/- 0.1 mA, +/- 1 digit, 500 Ohm.
- Voltage Output: 0.0 to +5.0 V (optional) / 0.0 to +10.0 V (optional), +/- 0.1 V, +/- 1 digit, 1K Ohm.
Enclosure: IP66 protection rating.
ATEX Marking: CE Ex II 3D Ex tc IIIB T 90°C IP66 Dc.

Usage Features:

Programming: Parameters are accessed via the 'E' key, and values are adjusted using 'Inc' (↑) or 'Dec' (↓) keys. The menu automatically exits after 10 seconds of inactivity.
Pressure Zero Setting: This procedure is crucial for accurate pressure readings. It involves pressing 'E' to enter programming, confirming with 'E' when 'H0' flashes, and waiting 10 seconds for the display to return to the pressure value.
Electrovalve Connection: An external bridge must connect the common terminal (C) to the appropriate power supply terminal based on the electrovalve voltage (24VAC, 115VAC, 230VAC, or 24VDC). Failure to do so will prevent electrovalve activation.
Pressure Tube Connection: The positive nozzle of the instrument connects to the dirty room, and the negative nozzle connects to the clean room of the filter. Rilsan type 6x4 hose is recommended. Filtered outlets are recommended to limit internal pressure sensor failure.
Precoating Function: When enabled (P12 = 1), the precoating threshold (P13) ensures the tool remains stationary until the pressure exceeds this threshold, after which the cyclical cleaning starts. To re-enable precoating, P12 must be set to 1.

Maintenance Features:

ATEX Compliance: Regular cleaning of dust layers is essential in places where combustible dust may deposit. The maximum permissible dust layer thickness depends on the declared surface temperature (90°C) and the dust type.
Electrical Safety: Before opening the cover, disconnect the electric supply. Wait a few seconds for stored energy in the circuit condenser to dissipate. If the device temperature is high, allow it to cool sufficiently before maintenance.
Installation: Ensure no foreign substances are left inside during assembly. Avoid sparks from friction of oxidizable substances. Earth the device through the special electrical junction on the internal connector. Use special fairleads or wall connectors for electrical supply cables to maintain IP66 seal.
System Protection: Install anti-lightning protection and protections against currents from nearby sources. Zener barriers on the supply are recommended to minimize potential sparks.

Gram ECO-S Specifications

General

Brand	Gram
Model	ECO-S
Category	Control Systems
Language	English

Gram ECO-S - User Manual

Table of Contents

Overview

Function Description:

Important Technical Specifications:

Usage Features:

Maintenance Features:

Gram ECO-S Specifications