Hanna Instruments HI 710 Instruction Manual

HI 700 / HI 710 Series

Process,
Panel-mounted,
Microprocessor-based,
Conductivity and TDS
Controllers

Instruction Manual

32

TABLE OF CONTENTS

PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . 4

GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . 4

FUNCTIONAL DESCRIPTION . . . . . . . . . . . . . . . . . . 6

MECHANICAL DIMENSIONS . . . . . . . . . . . . . . . . . . 7

SPECIFICATIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 8

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

SETUP MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

CONTROL MODE. . . . . . . . . . . . . . . . . . . . . . . . . 18

IDLE MODE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26

ANALOG OUTPUT . . . . . . . . . . . . . . . . . . . . . . . . 27

RS 485 COMMUNICATION . . . . . . . . . . . . . . . . . . 29

CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36

LAST CALIBRATION DATA . . . . . . . . . . . . . . . . . . . . 44

FAULT CONDITIONS AND SELFTEST PROCEDURES . . 45

EXTERNAL FUNCTIONS . . . . . . . . . . . . . . . . . . . . . 48

STARTUP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49

EC VALUES AT VARIOUS TEMPERATURES. . . . . . . . . 50

PROBE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . 51

ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . . . . 52

WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54

CE DECLARATION OF CONFORMITY. . . . . . . . . . . 55

© 2001 Hanna Instruments

All rights are reserved. Reproduction in whole or in part is prohibited without the written
consent of the copyright owner.

Dear Customer,
Thank you for choosing a Hanna Product.

This instruction manual has been written for the following
products:

HI 700221-

αα

αα

α EC controller with dual setpoint, ON/OFF

and PID controls, analog output.

HI 700222-

αα

αα

α EC controller with dual setpoint, ON/OFF

and PID controls, RS485 port.

HI 710221-

αα

αα

α EC and TDS controller with dual setpoint,

ON/OFF and PID controls, analog output.

HI 710222-

αα

αα

α EC and TDS controller with dual setpoint,

ON/OFF and PID controls, RS485 port.

α α

α α

α = 1 means 115 Vac, 50/60 Hz power supply
α α

α α

α = 2 means 230 Vac, 50/60 Hz power supply

Please read this instruction manual carefully before using the
instrument. It will provide you with the necessary information
for the correct use of the instrument, as well as a precise idea
of its versatility.

If you need additional technical information, do not hesitate
to e-mail us at [e-mail].

These instruments are in compliance with the

directives.

54

• Four different EC working ranges (0 to 199.9μS; 0 to
1999μS; 0 to 19.99mS; 0 to 199.9mS).

• Four different TDS working ranges (0 to 100.0ppm; 0 to
1000ppm; 0 to 10.00ppm; 0 to 100.0ppm) for HI 710
models.

• Possibility to switch to TDS measurements with conversion
factor from 0.00 to 1.00 (HI 710 models only).

• Temperature compensation of the HANNA standard solu­tions.

• Temperature compensation of the EC and TDS reading with
temperature coefficient ß selectable from 0 to 10%/°C.

• Manual temperature setting when the temperature probe is
not inserted or temperature exceeds the upper range.

• Last calibration data internally recorded (non-volatile EE­PROM memory): calibration date and time, cell constant,
calibration solution values.

• Input: 4-ring EC/TDS probe with cell constant 2.0 ± 10%,
or 4-20mA analog input from a transmitter.

• Output (HI 700221 and HI 710221 only):

- isolated 0-1 mA, 10 KΩ maximum load (optional);

- isolated 0-20 mA, 750 Ω maximum load (optional);

- isolated 4-20 mA, 750 Ω maximum load (optional);

- isolated 0-5 VDC, 1 KΩ minimum load (optional);

- isolated 1-5 VDC, 1 KΩ minimum load (optional);

- isolated 0-10 VDC, 1 KΩ minimum load (optional).

• Real time clock.

PRELIMINARY EXAMINATION

Remove the instrument from the packing material and exam­ine it carefully to make sure that no damage has occurred
during shipping. If there is any noticeable damage, notify
your Dealer or the nearest Hanna Customer Service Center
immediately.

Note Save all packing materials until you are sure that the instru-

ment functions correctly. Any damaged or defective items must
be returned in their original packing materials together with
the supplied accessories.

GENERAL DESCRIPTION

HI 700 and HI 710 series are real time microprocessor­based EC or TDS controllers. They provide accurate
measurements, flexible ON/OFF or proportional control ca­pabilities, analog input and output, RS485 port, dual setpoint
and alarm signal.

The system is composed of a case inside which the signal
conversion circuitry, the microprocessor circuitry and the output
power drivers are contained.

MAIN FEATURES OF DIFFERENT MODELS

• Display: large LCD with 4 ½ 17 mm digits and 3 ½ 10 mm
digits.

• LEDs: four LEDs are provided for signaling the energizing
of relay 1 and 2 (yellow LEDs) and alarm relays (a green
and a red LED).

• Relays: 1 or 2 output relays for low conductivity or high
conductivity dosage (COM, NO and NC contacts) and 1
output relay for alarm condition (COM, NO and NC con­tacts).

• RS485 isolated communication link (HI 700222 and HI
710222 only).

• Calibration and Setup procedures allowed only through
an unlock password.

• Calibration: 2 points with Hanna EC and TDS calibration
solutions.

76

REAR PANEL

1. 6-pin RS485 terminal (HI 700222 and HI 710222 only)

2. Analog Output (HI 700221 and HI 710221 only)

3. Power Supply

4. Alarm Terminal

5. Contact 2 - Second Dosing Terminal

6. Timer

7. Hold

8. Contact 1 - First Dosing Terminal

9. Pt 100 Temperature Sensor connector

10. EC/TDS probe connector

11. Power supply output for external transmitter

12. 4-20 mA input from external transmitter

Unplug the meter before any electrical connection.

MECHANICAL DIMENSIONS

FRONT VIEW SIDE VIEW

FUNCTIONAL DESCRIPTION

FRONT PANEL

1. Liquid Crystal Display

2. SETUP key enters setup mode

3. CFM key confirms current choice (and skips to the next item)

4. CAL key initiates and exits calibration mode

5.  key increases the blinking digit/letter by one when selecting a
parameter. Advances forward while in last calibration data
viewing mode. Increases the temperature setting when
temperature probe is not inserted

6. CAL DATA key last calibration data viewing (enters and exits)

7.  key decreases the blinking digit/letter by one when selecting a
parameter. Reverts backward while in last calibration data
viewing mode. Decreases the temperature setting when
temperature probe is not inserted

8. LCD key exits from setup and reverts back to normal mode (in idle
or control phases with the measurement on the display).
During EC/TDS calibration, it alternates EC/TDS buffer
value and current cell constant on the display. In HI 710
models only, it switches between EC and TDS reading

9.  key moves to the next digit/letter (circular solution) when se­lecting a parameter. Same as  key during last calibration
data viewing mode

10. LEDs

98

INSTALLATION

HI 700 and HI 710
series offer a multitude
of possibilities, from
single and dual set­points to ON/OFF or
PID dosage, isolated
outputs with user-select­able zoom, bi-directional
RS485, recorder outputs
in mAmps and Volts.

Use the 3-wire Pt 100
temperature sensor to
compensate for the
cable resistance and
have a precise auto­matic temperature
compensation of the
measurements in long
distance applications.

See the diagram for a
recommended installa­tion.

SPECIFICATIONS

Ranges 0.0 to 199.9 μS, 0 to 1999 μS

0.00 to 19.99 mS, 0.0 to 199.9 mS

0.0 to 100.0 ppm, 0 to 1000 ppm (HI 710* only)

0.00 to 10.00 ppt, 0.0 to 100.0 ppt (HI 710* only)

-10.0 to 100.0 °C

Resolution 0.1 μS, 1 μS, 0.01 mS, 0.1 mS

0.1 ppm, 1 ppm (HI 710 models only)

0.01 ppm, 0.1 ppm (HI 710 models only)

0.1 °C

Accuracy ±0.5 % F.S. (EC and TDS)

(@20°C/68°F) ±0.5°C (0 to 70°C), ±1°C (outside)

Typical EMC Deviation ±2 % F.S. (EC and TDS) / ±0.5 °C

EC Calibration Automatic or manual at 1 point

Temperature Compensation Automatic or manual, -10 to 100°C with adjustable

temperature coefficient from 0.00 to 10.00%/°C

TDS Factor (HI 710 only) Adjustable from 0.00 to 1.00

Outputs Analog: isolated 0-1 mA, 0-20 mA and 4-20 mA;

0-5 Vdc, 1-5 Vdc and 0-10 Vdc; or digital: RS485

Analog Input 4-20 mA

Setpoint Relay 2 contact outputs SPDT, 5A-250 Vac, 5A-30 Vdc

(resistive load). Fuse protected: 5A, 250V FUSE

Alarm Relay Contact output SPDT, 5A-250 Vac, 5A-30 Vdc

(resistive load). Fuse protected: 5A, 250V FUSE

Power Supply 230 ±10% Vac or 115 ±10% Vac, 50/60 Hz

Power Consumption 15 VA

Over Current Protection 400 mA 250V FAST FUSE

Environment 0 to 50°C (32 to 122°F); RH max 95%
Installation Category II

Enclosure Single case ½ DIN

Dimensions Panel cutout: 140 x 140 mm

Instrument: 144 x 144 x 170 mm

Weight Approximately 1.6 kg. (3.5 lb.)

* Note: actual TDS range for HI 710 models depends on TDS factor set.

1110

If the Pt 100 has more than 2 wires, con­nect the two wires of one end to pins 7
and 8 (pin 7 is an auxiliary input to com­pensate for the cable resistance) and one
wire from the other end to pin 6. Leave
the fourth wire unconnected, if present.

Note If the meter does not detect the temperature probe, it will

switch automatically to manual temperature compensation
with the temperature adjustable through the up and down
arrow keys. The “°C” symbol will blink on the LCD.

Note All external cables to be connected to the rear panel should

be ended with cable lugs.

• Analog output: Connect an external recorder with a 2-wire
cable to these terminals (#2 on page 7) paying attention
to the correct polarity. A wide variety of output signals,
either in V or in mA, is available to fit most standards.

• Contact 1 and 2: Connect the dosing devices to these
terminals (#5 and #8 on page 7) in order to activate and
deactivate them according to the selected control param­eters.

• mA Input: to switch to mA input signal from a
conductivity transmitter (e.g. HI8936, HI98143
or HI98144 series) see setup procedure (code

6). Connect the two signal wires from the trans­mitter to terminals #12 on page 7, paying at­tention to the correct polarity.

An unregulated 10 to 30 VDC - 50 mA max.
power supply output (#11 on page 7) is pro­vided to power the transmitter, if needed.

Once the installation is completed, select the appropriate
working range, the reference temperature (20 or 25°C) and
perform conductivity or TDS calibration as described in this
instruction manual. Set the control parameters according to
the process.

• Power Supply: Connect a 3-wire power cable
to the terminal strip, while paying attention
to the correct live (L), earth (PE) and neu­tral (N) terminal connections.

Power: 115 Vac -100 mA / 230 Vac - 50 mA.

Live Contact: fused inside 400 mA.
PE leakage current 1 mA; this contact must be con-

nected to ground.

• Conductivity input: the default input is from conductivity
probe. Connect the EC probe to the terminals #10 on
page 7. Connect the cable shield to pin 1, and the other
four wires according to the following table:

Color Pin #
GREEN 2
WHITE 3
RED 4
BLUE 5

• Pt 100 Terminals: these contacts (#9 on page 7) connect
the Pt 100 temperature sensor for automatic temperature
compensation of measurement. The HI7639 EC/TDS probe
has a built-in 3-wire Pt 100 sensor to be connected ac­cording to the following table:

Color Pin #
GRAY 6
BROWN 7
YELLOW 8.

If using a different Pt 100, separated from the conductivity
probe, connect the cable shield to pin 9, and the other
wires as explained below.

In the case of a 2-wire sensor connect
the Pt 100 to pins 6 and 8, and short
pins 7 and 8 with a jumper wire.

1312

• Then confirm the displayed digit with
 and move to the next one.

• When the whole password has been
inserted, press CFM to confirm it.

Note The default password is set at “0000”.

• The LCD will display “SET” on the
upper part and “c.00” on the lower,
allowing the user to edit setup param­eters (see table below).

• Enter the code of the parameter you want to set, using the
arrow keys as per the password procedure above (e.g. 41).

• Confirm the code by pressing CFM and the default or the
previously memorized value will be displayed with the first
digit blinking.

Note When the password is not inserted or a wrong password is

confirmed, the display will only show the previously memo­rized value, without blinking (read only mode). In this case,
the value cannot be set. Press LCD and start again.

• Enter the desired value using the arrow keys and then press
CFM.

SETUP MODE

HI 700 and HI 710 offer a multitude of possibilities from
ON/OFF or PID dosage to analog recorder output and from
alarm to selftest features.

The Setup Mode allows the user to set all needed character­istics of the meter.

The setup mode is entered by pressing SETUP
and entering the password when the device is
in idle or control mode.

Generally speaking, if the password is not inserted the user
can only view the setup parameters (except for password)
without modifying them (and the device remains in control
mode). An exception is certain setup items, or flags, which
can activate special tasks when set and confirmed.

Each setup parameter (or setup item) is assigned a two-digit
setup code which is entered and displayed on the secondary
LCD.

The setup codes can be selected after password and CFM
are pressed. When CFM is pressed, the current setup item is
saved on EEPROM and the following item is displayed.
Whenever LCD is pressed, the de­vice reverts back to control mode.
The same is true when CFM is
pressed on the last setup item.

The possible transitions in setup mode are the following:

ENTERING THE PASSWORD

• Press SETUP to enter the setup mode. The LCD will display
“0000” on the upper part and “PAS” on the lower. The first
digit of the upper part of the LCD will blink.

• Enter the first value of the pass­word by the  or  keys.

1514

Code Valid Values Default PW

14 Relay 1 deviation (D1) 0.5 to 10% f.s. 1% f.s. no

15 Relay 1 reset time 0.1 to 999.9 minutes 999.9 no

16 Relay 1 rate time 0.0 to 999.9 minutes 0.0 no

21 Relay 2 mode (M2) same as relay 1 0 no

22 Relay 2 setpoint (S2) 0.5 to 99.5% full scale 75% f.s. no

23 Relay 2 hysteresis (H2) 0 to 5% f.s. 1% f.s. no

24 Relay 2 deviation (D2) 0.5 to 10% f.s. 1% f.s. no

25 Relay 2 reset time 0.1 to 999.9 minutes 999.9 no

26 Relay 2 rate time 0.0 to 999.9 minutes 0.0 no

30 Relay 3 high alarm (HA) 0.5 to 99.5% full scale 95% f.s. no

HA-HysLA+Hys,Hys=1.5%f.s.,HAS1 or HAS2

31 Relay 3 low alarm (LA) 0.5 to 99.5% full scale 5% f.s. no

LA+HysHA-Hys,Hys=1.5%f.s.,LAS1 or LAS2

32 Proportional control 1 to 30 min 5 no

mode period

33 Maximum relay ON time 10 to 9999 min 60 no

(after which an alarm mode is entered)

34 Alarm mask time 00:00 to 30:00 00:00 no

40 Analog output selection 0: 0-1mA 2 no

1: 0-20 mA
2: 4-20 mA
3: 0-5 VDC
4: 1-5 VDC
5: 0-10 VDC

41 Analog output 0 to 100% full scale 0 no

lower limit (O_VARMIN) (O_VARMIN  O_VARMAX - 5% f.s.)

42 Analog output 0 to 100% full scale 100% f.s. no

upper limit (O_VARMAX) (O_VARMIN  O_VARMAX - 5% f.s.)

• After confirmation, the selected parameter
is displayed. The user can scroll through
the parameters by pressing CFM.

In order to directly set another param­eter, press SETUP again and enter the
code or scroll to it by pressing CFM.

The following table lists the setup codes along with the descrip­tion of the specific setup items, their valid values and whether
password is required to view that item (“PW” column):

Code Valid Values Default PW

00 Factory ID 0 to 9999 0000 no

01 Process ID 0 to 9 9 00 no

02 Control enable/disable 0: C.M. disabled 0 no

1: C.M. enabled

03 Range 1: 0.0-199.9 μS (or 100.0 ppm) 4 no

(depends on model) 2: 0-1999 μS (or 1000 ppm)

3: 0.00-19.99 mS (or 10.00 ppt)
4: 0.0-199.9 mS (or 100.0 ppt)

04 Reference Temperature 20°C or 25°C 25°C no

05 Temperature Coefficient 0.00 to 10.00 %/°C 2.00 no

06 Input Selection 0: conductivity probe 0 no

1: 4-20 mA input signal

07 Temperature ATC: Automatic ATC no

compensation User: Manual

08 TDS Factor (HI710 only) 0.00 to 1.00 0.50 no

11 Relay 1 mode 0: disabled 0 no

(M1) 1: ON-OFF high setpoint

2: ON-OFF low setpoint
3: PID, high setpoint
4: PID, low setpoint

12 Relay 1 setpoint (S1) 0.5 to 99.5% full scale 25% f.s. no

13 Relay 1 hysteresis (H1) 0 to 5% f.s. 1% f.s. no

1716

If M1= 3 then S1+D1

HA;

If M1= 4 then S1-D1

LA;

If M2= 1 then S2-H2

LA;

If M2= 2 then S2+H2

HA;

If M2= 3 then S2+D2

HA;

If M2= 4 then S2-D2

LA;

If M1= 1 and M2 = 2
then S1-H1

S2+H2, S2LA, HAS1;

If M1 = 2 and M2 = 1
then S2-H2

S1+H1, S1LA, HAS2;

If M1 = 3 and M2 = 2
then S1

S2+H2, S2LA, HAS1+D1;

If M1 = 2 and M2 = 3
then S1+H1

S2, S1LA, HAS2+D2;

If M1 = 4 and M2 = 1
then S1

S2–H2, S1–D1LA, HAS2;

If M1 = 1 and M2 = 4
then S1–H1

S2, S2–D2LA, HAS1;

If M1 = 3 and M2 = 4
then S1

S2, S2–D2LA, HAS1+D1;

If M1 = 4 and M2 = 3
then S2

S1, S1–D1LA, HAS2+D2;

where the minimum deviation (D1 or D2) is 0.5% of the maxi­mum range value.

Note When a wrong setup value is confirmed,

the controller does not skip to the next setup
item but remains in the current item dis­playing a flashing “ERROR” indicator un­til the parameter value is changed by the
user (the same is also true for the setup code selection).

Note In some circumstances, the user cannot succeed in setting a

parameter to a desired value if the related parameters are not
changed beforehand; e.g. to set a EC high setpoint to 10.0
mS the high alarm must be set to a value greater than 10.0
mS first.

Code Valid Values Default PW

60 Current day 01 to 31 from RTC no

61 Current month 01 to 12 from RTC no

62 Current year 1998 to 9999 from RTC no

63 Current time 00:00 to 23:59 from RTC no

71 Baud rate (RS485) 1200, 2400, 4800, 9600 9600 no

72 Cleaning timer 0 to 19999 days 0 no

73 Initial cleaning day 01 to 31 01 no

74 Initial cleaning month 01 to 12 01 no

75 Initial cleaning year 1998 to 9999 1998 no

76 Initial cleaning time 00:00 to 23:59 00:00 no

77 Cleaning ON interval 0 to 19999 minutes 0 no

90 Display selftest 0: off 0 yes

1: on

91 Keyboard selftest 0: off 0 yes

1: on

92 EEPROM selftest 0: off 0 yes

1: on

93 Relays and LEDs selftest 0: off 0 yes

1: on

94 Watchdog selftest 0: off 0 yes

1: on

99 Unlock password 0000 to 9999 0000 yes

Note The process controller automatically checks to ensure that

the entered data matches other related variables. If a wrong
configuration is entered, “ERROR” blinks on the LCD to prompt
the user. The correct configurations are the following:

If M1=/ 0 then S1

HA, S1LA;

If M2=/ 0 then S2

HA, S2LA;

If M1= 1 then S1-H1

LA;

If M1= 2 then S1+H1

HA;