B&C Electronics IC 7685 Instruction Manual

U N I E N I S O 9 0 0 1 : 2 0 0 0

C E R T . N . 9 1 1 5 B C E L

OPERATOR’S MANUAL

IC 7685

ION CONCENTRATION CONTROLLER

MICROPROCESSOR BASED

Rev. B

Valid for Option 091.3711

Scales:	10.00/100.0/1000 PPM
Temperature scale:	-10/+110 °C
Power supply:	110/220 Vac

Software: R2.1x

B&C Electronics Srl – Via per Villanova 3 – 20040 Carnate (Mi) – Italy		P.IVA 00729030965
Tel [phone] – Fax [phone]	[e-mail] -	www.bc-electronics.it

B&C Electronics

IC 7685 - Rev. B

1	FEATURES ..................................................................................................................................			3
2	SPECIFICATIONS.......................................................................................................................			4
	2.1	FUNCTIONAL SPECIFICATIONS...................................................................................		4
	2.2	TECHNICAL SPECIFICATIONS......................................................................................		6
	2.3	PHYSICAL SPECIFICATIONS.........................................................................................		9
3	SOFTWARE DESCRIPTION ....................................................................................................			10
	3.1	KEYBOARD .....................................................................................................................		10
	3.2	READOUT SEQUENCES ................................................................................................		11
	3.3	CALIBRATION SEQUENCES ........................................................................................		16
	3.3.1		Manual/automatic mode .................................................................................................	16
	3.3.2		Ion Selective Electrode Calibration ................................................................................	17
	3.3.3		Electrodes drift adjustment .............................................................................................	21
	3.3.4		Temperature calibration..................................................................................................	22
	3.3.5		Thermocompensation parameters...................................................................................	24
	3.3.6		Alarm calibration ............................................................................................................	25
	3.4	CONFIGURATION ..........................................................................................................		27
	3.4.1		Keyboard locked/unlocked .............................................................................................	27
	3.4.2		LCD display contrast ......................................................................................................	28
	3.4.3		Set-point A/B calibration................................................................................................	28
	3.4.4		Access number................................................................................................................	30
	3.4.5		Ion valence......................................................................................................................	31
	3.4.6		Measuring unit ................................................................................................................	32
	3.4.7		Set-point scale, alarm and analog output........................................................................	32
	3.4.8		Software filter .................................................................................................................	33
	3.4.9		Scale of the analog output n°1 ........................................................................................	34
	3.4.10		Analog output n°1 range.................................................................................................	34
	3.4.11		Scale of the analog output n°2 ........................................................................................	36
	3.4.12		Analog output n°2 range.................................................................................................	36
	3.4.13		Set-point A function .......................................................................................................	38
	3.4.14		Set-point B function........................................................................................................	38
	3.4.15		Set-point A alarm............................................................................................................	39
	3.4.16		Set-point B alarm............................................................................................................	40
	3.4.17		Alarm relay contact.........................................................................................................	41
	3.4.18		New access number ........................................................................................................	41
4	INSTALLATION .......................................................................................................................			43
	4.1	CONTROLLER INSTALLATION...................................................................................		43
	4.2	SENSOR INSTALLATION..............................................................................................		43
	4.3	ELECTRICAL INSTALLATION.....................................................................................		43
5	OPERATING THE SYSTEM ....................................................................................................			46
6	CALIBRATION..........................................................................................................................			49
7	PREVENTIVE MAINTENANCE..............................................................................................			50

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B&C Electronics

IC 7685 - Rev. B

1 FEATURES

*Input from Ion Selective Electrodes

*Selectable measuring unit (g/l mbar mg/l mmHg PPM)

*Measuring range from 0,01 to 1000 PPM

*Selectable scales 10,00 - 100,0 - 1000 PPM

*Autoranging

*5 points calibration

*Temperature input from Pt100

*Temperature readout

*Automatic and manual Temperature compensation

*Alphanumeric back-lighted LCD

*Software filter on the readout

*Automatic and manual operation

*0/20 mA or 4/20 mA programmable isolated output

*Dual set-points with hysteresis, delay and min/max programmable functions

*Min/max and set-points timing alarm relay

*Software:

-3 access levels

-user friendly

-keyboard lock

-access code

-watch-dog

*EEPROM parameter storage

*Automatic overload protection and reset

*Extractable terminal blocks

*96X96 (1/4" DIN) housing

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B&C Electronics

IC 7685 - Rev. B

2SPECIFICATIONS

2.1FUNCTIONAL SPECIFICATIONS

Input

The instrument accepts input from an Ion Selective Electrode.

A second input is provided for 2 or 3 wires Pt100 RTD Temperature.

Software filter

The unit is provided with a programmable software filter, to be inserted when the readout is not stable.

The user may select different filter values for small and large signal fluctuations.

Calibration

First calibration carried out by standard solutions (from 2 to 5 concentration values) is necessary.

One point calibration may be performed in order to correct the Reference electrode drift during the regular operation.

Temperature compensation

The unit is supplied with manual or automatic Temperature compensation. The instrument detects of the absence or malfunctioning of the Temperature sensor and automatically switches to manual compensation.

Analog output

Either a 0/20 mA or 4/20 mA programmable and isolated output may be selected, for use as an interface with computers or data loggers.

The input range corresponding to the output is programmable.

Control relays

The monitor is equipped with two SPDT control relays.

Each control relay may be programmed for set-point, high/low, hysteresis or delay time actuation.

The full display indicates the current settings and current status of each relay.

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B&C Electronics

IC 7685 - Rev. B

Alarm relay

The unit contains a third SPDT relay designated as an alarm relay.

This relay may be used to warn of conditions that may indicate operational problems.

The relay will activate on either high/low value conditions, or on failure of the control relays to maintain proper control.

In addition this relay may be programmed for either normal or fail-safe operation.

Operating mode

The instrument is provided with 2 programmable modes of operation.

- Automatic operation:

The Automatic mode is the normal operation mode of the unit.

- Manual operation:

This mode of operation would normally be used for control system troubleshooting. The unit will allow the relays to be manually actuated by pushing up/down keys.

The letter "M" flashing on the display, indicates the instrument is in manual operation mode.

Configuration

A number of programming functions are provided in the Configuration menu and are protected by a selectable access number, which must be entered to allow changes in this setting.

The keys on the front panel of the monitor can be used for both changing the display and for calibrations and set-point adjustments.

When the monitor is shipped, all functions are accessible.

However, the adjustment and calibration functions may be locked in order to prevent unauthorized adjustments to the instrument.

Options
091.3711	Dual isolated and programmable output.
	Two outputs may be configured for Concentration or Temperature.
091.701	RS232 isolated output.
	The output sends the data (Concentration, mV, °C) to the serial port of the
	computer.
091.404	24 Vac power supply.

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B&C Electronics IC 7685 - Rev. B

2.2		TECHNICAL SPECIFICATIONS
The Default values are correspondent to the factory calibration values.
Parameters marked by " * " can be modified in the Configuration procedures.
	OPERATING MODE		Default
		Automatic/Manual	Auto
	CONCENTRATION		Default
	*	Input: ISE electrodes	X+
		Ion type: -2/-1/+1/+2
	* Measuring unit: g/l mbar mg/l mmHg PPM		PPM
	*	Measuring range: 5 decades from 0.01 to 1000 PPM	100.0PPM
		Scales: 10.00 - 100.0 - 1000 PPM autoranging
		Calibration: min. 2 points / max. 5 points	0.0 mV
		1 point calibration: ± 100.0 mV
		Range: ± 1100.0 mV
		Software filter 90% Response Time:	2.0"
	* Large signal changing (>10.0mV): 0.4"/20.0"
	* Small signal changing (<10.0mV): 0.4"/20.0"		10.0"
	TEMPERATURE		Default
		Input: RTD Pt100
		Connection: 2/3 wires
		Measuring and compensation range: -10.0/110.0 °C
		Resolution: +/- .1 °C	0°C
		Zero adjustment: +/- 2°C
		Manual Temperature compensation: -10/110°C	20°C
	THERMOCOMPENSATION		Default
		Thermocompensation: On/Off	Off
		Isothermal point: -999.9mV/+999.9mV	0.0 mV
		Thermocompensation coefficient: 0.0/1.000%/°C	0.198%/°C
		Compensation range: -10/110°C
		Reference Temperature: 20 °C
	SET POINT A/B		Default
		Action: ON-OFF	0.0PPM
		Set point value: 0/1000
		Hysteresis: 0/100	0.0PPM
	*	Relay delay: 0.0/99.9 sec	0.0 sec
		Function: HI/LO (Max/Min)	LO
		Relay contacts: SPDT 220 V 5 Amps Resistive load

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B&C Electronics			IC 7685 - Rev. B
	ALARM (C-D)		Default
		Low value: 0/1000	0.0PPM
		High value: 0/1000	100.0PPM
		Delay: 0.0/99.9 sec	0.0 sec
	* Contact type: ACT/DEA		ACT
	* Alarm on max. SA: ON/OFF		OFF
	* Max. time SA: 0/60 minutes		60 m
	* Alarm on max. SB: ON/OFF		OFF
	* Max. time SB: 0/60 minutes		60 m
		Relay contacts: SPDT 220 V 5 Amps Resistive load
	ANALOG OUTPUT Nr. 1		Default
	*	Scale: PPM/°C (option 091.3711)	PPM
	* Range: 0-20/4-20 mA		0-20 mA
	*	Scale PPM:	0.0PPM
		Point 1 (out mA min.): 0/1000
	* Point 2 (out mA max.): 0/1000		100.0PPM
		Scale °C: (option 091.3711)	-10.0°C
	* Point 1 (out mA min.): -10.0/110.0°C
	* Point 2 (out mA max.): -10.0/110.0°C		110.0°C
		Response time: 2.5 sec. for 98%
		Isolation: 250 Vca
		R max: 600 Ohm
	ANALOG OUTPUT Nr. 2 (option 091.3711)		Default
	* Scale: PPM/°C		PPM
	* Range: 0-20/4-20 mA		0-20 mA
		Scale PPM:	0.0PPM
	* Point 1 (out mA min.): 0/1000
	* Point 2 (out mA max.): 0/1000		100.0PPM
		Scale °C:	-10.0°C
	* Point 1 (out mA min.): -10.0/110.0°C
	* Point 2 (out mA max.): -10.0/110.0°C		110.0°C
		Response time: 2.5 sec. for 98%
		Isolation: 250 Vca
		R max: 600 Ohm
	SERIAL COMMUNICATION (option 091.701)		Default
		Baud Rate: 4800 bit/s
		Bit length: 8 bit
		Nr. of Stop bit: 1
		Parity: None
		Isolated from measure circuits
		Data frequency: 0.4 sec.
		Example of data transmission:
		' ±1000.0 mV 100.0 PPM ±100.0 °C '

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B&C Electronics		IC 7685 - Rev. B
	CONFIGURATION (*)	Default
	Free calibration (Access code not required):	unlocked
	Keyboard locked/unlocked
	LCD contrast (0/7)	4
	Access code number required for:	X+
	Ion type: (X--/X-/X+/X++)
	Measuring unit (g/l mbar mg/l mmHg PPM)	PPM
	Set point output scale: (10.00/100.0/1000)	100.0PPM
	Large signal RT filter SW: (0.4/20.0)	2.0 sec
	Small signal RT filter SW: (0.4/20.0)	10.0 sec
	Output Nr.1 scale: (PPM/°C) (option 091.3711)	PPM
	Output Nr.1 range: (0/20 4/20)	0/20 mA
	Point 1 (for 0 or 4 mA): (0/1000)	0.0PPM
	Point 2 (for 20 mA): (0/1000)	100.0PPM
	Output Nr.2 scale: (PPM/°C) (option 091.3711)	PPM
	Output Nr.2 range: (0/20 4/20)	0/20 mA
	Point 1 (for 0 or 4 mA): (0/1000)	0.0PPM
	Point 2 (for 20 mA): (0/1000)	100.0PPM
	Relay A function: (LO/HI)	LO
	Relay B function: (LO/HI)	LO
	Alarm on max. operating time of SA: (ON/OFF)	OFF
	Max. operating time of SA: (0/60)	60 m
	Alarm on max. operating time of SB: (ON/OFF)	OFF
	Max. operating time of SB: (0/60)	60 m
	Alarm relay status: (ACT/DEA)	ACT
	Access number: 0/999	0
	GENERAL SPECIFICATIONS
	Alphanumeric display: 1 line x 16 characters
	Acquisition time: 0/50°C
	Humidity: 95% without condensation
	Power supply: 110/220 Volt ac +/- 10 % 50/60 Hz
	Isolation: 4000 V between primary and secondary (IEC 348)
	Power: 5 VA max.
	Terminal block: extractable
	Weight: 850 gr.
	Dimensions: 96 x 96 x 155 mm. (DIN 43700)

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B&C Electronics

IC 7685 - Rev. B

2.3PHYSICAL SPECIFICATIONS

The controller enclosure is designed for surface or panel mounting.

It consists of an anodized aluminium case built according to the standard DIN 43700, with an aluminium panel coated with scratch-proof and non-corrosive polycarbonate membrane.

A transparent waterproof front door SZ 7601 can be added to the housing, in order to protect the unit from excessive moisture or corrosive fumes.

Signal and power cable connections are made by using two special extractable terminal blocks placed in the back of the instrument.

This makes wiring, installation and general maintenance of the probes and other devices easier. The package is supplied complete with fixing clamps for panel-mounting.

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B&C Electronics

IC 7685 - Rev. B

3SOFTWARE DESCRIPTION

3.1 KEYBOARD

KEY

FUNCTION

ù- it allows the operator to go to the next Display

- it allows to go back to the main Display. The eventual new parameter values will not be memorized

§- it allows the access of calibration sequences

ò- it allows to increase the displayed parameters - it allows to choose between different functions

ç- it allows to decrease the displayed parameters - it allows to choose between different functions

£- it allows to enter the selected data and to return to the main Display D0

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B&C Electronics

IC 7685 - Rev. B

3.2 READOUT SEQUENCES

Applying the power to the instrument the display will show the Ion selected for approximately 3 seconds, then will show the main display (D0).

ISE meter X+

X+	positive monovalent ion
(X++)	positive bivalent ion
(X-)	negative monovalent ion
(X--)	negative bivalent ion

Press ùto visualize the following Display:

D0		Concentration Value, set-point
	xxx.xPPM ìAL ì BH
		status/functions
D1	PPM x point cal	ISE calibration
D2	xxx.x mV X++	mV supplied by ISE
D3	TEMP.: xx.x°CM	Temperature value
D4	Termos.: OFF	Thermocompensation parameters
D5	SA xxx.xPPM*à LO	Set-point A parameters
D6	SB xxx.xPPM*à HI	Set-point B parameters
D7	AL x.x/xxx.xpp	Alarm parameters
D8	01 xx.xmA/xxx pp	Analog output Nr. 1/input values
D8bis	02 xx.xmA/xxx pp	Analog output Nr. 2/input values
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B&C Electronics IC 7685 - Rev. B

D9
Configuration		Configuration display
D10		Instrument P/N and software release
IC7685	R2.1x

----------------------------------
(D0)	xxx.xPPMìALM àBH		Concentration value, set-point
			status/functions
	xxx.xPPM	Concentration value
	(>>>>)	over range
	(flashing values) alarm condition
	(M flashing)	manual operating mode

ìA relay A deactivated (èA) relay A delayed (àA) relay A activated

ìB relay B deactivated (èB) relay B delayed (àB) relay B activated

Lminimum function (LO)

H maximum function (HI)

§to activate the procedure of the manual/automatic mode selection

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B&C Electronics

IC 7685 - Rev. B

ùto go to

----------------------------------
(D1)	PPM x point cal	ISE calibration

x Number of memorized calibration points

§to activate the calibration sequence

ùto go to

----------------------------------
(D2)	xxx.x mV X++		mV supplied by ISE
	xxx.x mV mV given by the electrode
	X++	ion valence
ùto go to
----------------------------------
(D3)	TEMP.: xx.x°CM		Temperature value
	xx.x	Temperature value

M manual value

§to activate the Temperature calibration or the procedure of the manual Temperature value selection

ùto go to

----------------------------------
(D4)	TERMOC.: OFF		Thermocompensation parameters
OFF		thermocompensation deactivated
(ON)		thermocompensation activated
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B&C Electronics

IC 7685 - Rev. B

§to activate the thermocompensation parameters calibration

ùto go to

----------------------------------

(D5)	SA xxx.xPPM*à LO Set-point A parameters
	SA	set-point A parameters
	xxx.xPPM set-point value

àset-point A status (relay activated)

LO	selected function (minimum)

* alarm function on set-point A is activated

§to activate the set-point value, hysteresis and delay time programming sequences

ùto go to

----------------------------------

(D6)	SB xxx.xPPM*à HI Set-point B parameters
	SB	set-point B parameters
	xxx.xPPM set-point value

àset-point B status (relay activated)

HI	selected function (maximum)

* alarm function on set-point B is activated

§to activate the set-point value, hysteresis and delay time programming sequences

ùto go to

----------------------------------
(D7)	AL x.x/xxx.xpp	Alarm parameters
AL	Concentration values alarm (PPM)
x.x	low alarm value

xxx.x actual high alarm value

§to activate the alarm values programming sequences

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B&C Electronics

IC 7685 - Rev. B

ùto go to

----------------------------------
(D8)	01 xx.xmA/xxx pp	analog output Nr.1/input values

01 selected analog output Nr.1 xx.xmA analog output value (mA) xxx pp input measuring value (PPM)

(xxx°C) Temperature value (option 091.3711)

ùto go to

----------------------------------
(D8BIS) 02 xx.xmA/xxx pp	analog output Nr.2/input values

02 selected analog output N°2 (option 091.3711) xx.xmA analog output value (mA)

xxx pp input measuring value (PPM) (xxx°C) Temperature value

ùto go to

----------------------------------
(D9)	Configuration	Configuration display

§to activate the programming sequences of keyboard lock/unlock, display

contrast, visualization and modification of the instrument configuration parameters

ùto go to

----------------------------------
(D10)	IC7685	R2.1x	Instrument P/N and software release

ùto go back to the main display (D0)

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B&C Electronics

IC 7685 - Rev. B

3.3CALIBRATION SEQUENCES

The following procedures will be active whenever the instrument is not in the keyboard lock condition.

To unlock the keyboard follow the procedures mentioned in the "Configuration" chapter.

The following procedures allow the sensor calibration, the set-point and alarm parameters programming.

The sequence (1, 2, ....) helps the operator to following the regular calibration sequence.

IMPORTANT NOTE: during the calibration procedure the microprocessor turn the unit to the main display if no keys have been pressed within 5 minutes (30 minutes for ISE calibration sequences).

3.3.1Manual/automatic mode

Normally the instrument works in automatic mode.

Follow this procedure to change operating mode Automatic/Manual.

1.ù	to go to
(D0)	xxx.xPPM ìAL ì BH
2.§	to access the operating mode selection
	CAL MODE: AUTO
	AUTO automatic mode
	(MANUAL) manual mode
	ùto go back to (DO)

3.òç to select the operating mode

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