Dwyer Instruments DH-006 Manuale utente

Bulletin B-32

Series DH Digihelic®Differential Pressure Controller

Specifications - Installation and Operating Instructions

DWYER INSTRUMENTS, INC.

Phone: 219/879-8000 www.dwyer-inst.com

P.O. BOX 373 • MICHIGAN CITY, IN 46361, U.S.A. Fax: 219/872-9057 e-mail: info@dwyer-inst.com

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DIMENSIONS

1-3/4

[44.45]

4-1/2

[114.30]

1/2

[12.70]

4-1/2

[114.30]

3-19/32

[91.28]

1-15/16

[49.21]

3-25/32

[96.04]

Face Designed to Meet NEMA 4X (IP66)

PANEL CUT OUTS

Horizontal

3.620 in. + 0.032 - 0.0

(92.00 mm + 0.8 - 0.0)

1.772 in. + 0.024 - 0.0

(45.00 mm + 0.6 - 0.0)

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SPECIFICATIONS

Service: Air and non-combustible, compatible gases.

Wetted Materials: Consult factory.

Housing Material: ABS plastic, UL approved 94-V-0.

Accuracy: ±0.5% at 77°F (25°C) including hysteresis and repeatability (after 1 hour

warm-up).

Stability: < ±1% per year.

Pressure Limits: Ranges ≤2.5 in. w.c. = 2 psi

5˝: 5 psi; 10˝: 5 psi; 25˝: 5 psi; 50˝: 5 psi; 100˝: 9 psi.

Temperature Limits: 32 to 140°F (0 to 60°C).

Compensated Temperature Limits: 32 to 140°F (0 to 60°C).

Thermal Effects: 0.020%/°F (0.036/°C) from 77°F (25°C).

Power Requirements:

High Voltage Power = 100 to 240 VAC, 50 to 400 Hz or 132 to 240 VDC.

Low Voltage Power = 24 VDC ±20%.

Power Consumption:

Low Voltage Power = 24 VDC - 130 mA max.

High Voltage Power = 100 to 240 VAC, 132 to 240 VDC - 7VA max.

Output Signal: 4-20 mA DC into 900 ohms max.

Zero & Span Adjustments: Accessible via menus.

Response Time: 250 ms (dampening set to 1).

Display: 4 digit LCD 0.4˝ height LED indicators for set point and alarm status.

Electrical Connections: Screw terminals.

Process Connections: Compression fitting for use with 1/8˝ ID tubing x 1/4˝ OD

tubing (3.175 mm ID x 6.35 mm OD).

Enclosure Rating: Face designed to meet NEMA 4X (IP66).

Mounting Orientation: Mount unit in horizontal plane.

Size: 1/8 DIN. Panel Cutout: 1.772 x 3.620 in (45 x 92 mm).

Weight: 14.4 oz (408 g).

Serial Communications: Modbus® Protocol RTU, RS485, 9600 Baud.

Agency Approvals: UL Listed, CUL Listed File No. E83725

CE EMC and Low Voltage Directives:

EN61000-4-2

EN61000-4-3*

EN61000-4-4

EN61000-4-5

EN61000-4-6

EN61000-4-11

EN55011

EN601010

* Models DH-001 through DH-004, DH-011 through DH-014 pass criteria B. All others pass criteria A.

Switch SPECIFICATIONS

Switch Type: 2 SPDT relays.

Electrical Rating: 8 Amps at 240 VAC resistive.

Set Point Adjustment: Adjustable via keypad on face.

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WIRING

2020 1919 1818 1717 1616 1515 1414 1313 1111

1212

1010 9 8 7654321

2222

2323

2424

N/CN/C

N/CN/C N/ON/O

N/O

SP1

RELAY

SP1

RELAY

SP2 OR

ALARM

RELAY

SP2 OR

ALARM

RELAY

3/8A 250VAC

MEDIUM LAG

3/8A 250VAC

MEDIUM LAG

100-240 VAC or

132-240 VDC POWER

100-240 VAC or

132-240 VDC POWER

NOTE1NOTE1

RS485 SERIAL

COMMUNICATION

RS485 SERIAL

COMMUNICATION

24 VDC POWER24 VDC POWER

REMOTE RESET

SWITCH

REMOTE RESET

SWITCH

NOTE 1

4-20mA

transmitter

output

4-20mA

transmitter

output

Device receiving 4-20mA

signal. Check specifications

of this device for input load

resistance. Typical 250 to

600 OHMS, 900 OHMS

maximum

signal. Check specifications

of this device for input load

resistance. T

600 OHMS, 900 OHMS

maximum _

High Pressure PortHigh Pressure Port Low

Pressure

Port

Low

Pressure

Port

NOTES:

1. The instrument may be powered from the AC line or 24 VDC. Do not wire AC

line terminals 4-5 and 24 VDC terminals 14-15 at the same time or damage to

the unit will result.

2. For supply connections, wire in accordance with an equivalent national standard

or code. Use copper conductors only rated for at least 75°C.

3. Terminals 11-15, 18 and 20 are rated CLASS 2.

4. ISOLATION:

Relays - 1500 VAC to all other inputs and outputs.

AC Line Power (terminals 4-5) - 1500 VAC to all other inputs and outputs.

RS485 output - 500 VAC to all other CLASS 2 wiring.

The 24 VDC Power, 4-20 mA transmitter, and Remote Reset Switch share

a common ground.

5. The Remote Reset Switch must be a dry contact switch.

6. Shielded cable is required for RS485 wiring.

WIRING

WARNING

If Digihelic®is powered by 24 VDC, the device receiving the 4-20 mA transmitter

output MUST NOT share a common ground with the 24 VDC supply or damage

to the Digihelic®will result.



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It is not necessary to remove the control chassis from the housing for

installation. If the control chassis is removed from the housing, you

must follow industry standard practice for control and protection

against Electro-Static Discharge (ESD). Failure to exercise good ESD

practices may cause damage to the control.

Wiring to housing terminals while chassis is removed may cause dis-

tortion of the internal connector and possible damage to the connec-

tor when the chassis is reinstalled. It is strongly recommended that

the control housing be wired with the chassis installed.

INSTALLATION

Mount the instrument in a location that will not be subject to excessive temperature,

shock or vibration. All models are designed for mounting in an enclosed panel.

Select the position desired for the instrument on the panel. Prepare the panel by cut-

ting and deburring the required opening.

From the front of the panel, slide the instrument through the cut out. The housing

gasket should be against the housing flange before installing.

From the rear of the panel slide the mounting collar over the housing. Hold the hous-

ing with one hand and using the other hand, push the collar evenly against the panel

until the springs are compressed. The ratchets will hold the mounting collar and

housing in place.



10 9 8 7654321

___

+++

SHIELD

TIE SHIELD TO EARTH GROUND

TO RS232 TO

RS485 CONVERTER

TO RS232 TO

RS485 CONVERTER

120 OHM

RESISTOR

120 OHM

RESISTOR

LAST UNIT ON RS485 BUSS

WIRE NUT

- RS485 WIRING TO DAISY CHAIN INSTRUMENTS ON THERS485 BUSS

UP TO 128 UNITS MAY BE DAISY CHAINED

THE 120 OHM RESISTOR

IS USUALLY ONLY

NECESSARY FOR LONG

WIRE RUNS.

THE 120 OHM RESISTOR

IS USUALLY ONLY

NECESSARY FOR LONG

WIRE RUNS.

DIGIHELIC® CONTROLER RS485 WIRING

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SP1

SP2

ALHI

ALLO

SP/AL

RST

MENU E

X1K

MULTIPLIER DESCRIPTOR

VISIBLE WITH S

VISIBLE WITH SO

ME VELOCITY

AND FLOW RANGE

FRONT PANEL

PRESSURE

VALUE

PRESSURE

VALUE

UNITS

ALARM

DESCRIPTOR

SP2

DESCRIPTOR

SP2

DESCRIPTOR

SP1

DESCRIPTOR

SP1

DESCRIPTOR

SP/ALSP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

MENUMENU

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RSTRST

PAGE 1 OF 12

8/25/03

HOME POSITION FUNCTION

Sequences the display

through SET POINT and

ALARM settings

Allows access to the

menus

Displays full scale

range of unit

Clears or resets an Alarm

(alarm set for manual

reset)

MAIN MENU FUNCTION

Return to home

position

Return to home

position

Sequences through

menus

Sequences through

menus

Enter into SUB MENU

SUB MENU FUNCTION

Return to home position

Return to previous menu

Increments a value

Decrements a value

Changes a value or

setting. Press ENTER

and display will blink.

Adjust with UP or DOWN

arrows. Press ENTER to

store. Display will stop

blinking.

Peak/Valley SUB

MENU resets display to

present value.

SP/AL

ARROW

DOWN

ARROW

ENTER

RESET

KEY FUNCTIONS

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SETTING SET POINTS AND ALARMS

The hot key provides direct access to the Set Point and Alarm MENU. The

Set Point and Alarm MENUS that are displayed are based upon the Control (CtrL)

SUB MENU.

SP/AL

Visible when

mode =

CONTROL MODE

SET POINT ADJUSTMENT

Adjusting the Digihelic®Controller Set Points is quick and simple. Instead of setting

a set point and deadband, simply adjust

SP1H

SP2H

for the desired relay turn

on point, and then adjust

SP1L

SP2L

for the desired relay turn off point.

PRESSUREPRESSURE

0TIME

TIME

0.20.2

0.40.4

0.60.6

0.80.8

1.0

(in. w.c.)

In the above graph, an instrument with a 1.0˝ range would have the SP1 relay turn

on at 0.8˝ and off at 0.4˝.

SP1H

sets the relay turn on point, and

SP1L

sets the relay

turn off point. The relays outputs normally function in the direct acting mode, which

means the relays turn on with an increase in pressure. SP1 may be configured to act

as a reverse acting relay (refer to the 1SP SUB MENU setting, page 15). When set

for reverse acting,

SP1H

sets the relay turn OFF point, and

SP1L

sets the relay turn

ON point. SP2 is always direct acting.

SP/ALSP/AL

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MENU MAP

CONTINUED

SETTINGS

MAIN MENUS SUB MENUS

MENUS

UNAVAILABLE

FOR

BI-DIRECTIONAL

RANGES AND

RANGES ABOVE

25 IN. W.C.

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

MENUMENU

RST

PAGE 1 OF 12

8/25/03

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CONTINUED

SETTINGS

MAIN MENUS SUB MENUS

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

MENUMENU

RST

PAGE 1 OF 12

8/25/03

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PAGE 5 OF 12

MAIN MENUS SUB MENUS SETTINGS

Menus present only

in pressure operation

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

RST

PAGE 1 OF 12

8/25/03

SP/AL

MENUMENU

RST

PAGE 1 OF 12

8/25/03

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