Azbil  MIZCON Plus Specifications & Instructions

Azbil MIZCON Plus Specifications & Instructions

Cooling tower controller

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General
MIZCON
Plus (also written as 'MIZCON+') Model
R7010W is a conductivity and temperature controller for
cooling water.
MIZCON Plus keeps the conductivity of the cooling water
at the optimum level and thus precisely controls makeup
water. This enables the following:
- Saves makeup water and chemical.
- Ensures
operating
compressor.
- Prevents high-pressure cut-out of chiller and critical
damage of condenser.
- Prevents cooling tower and pipes from being clogged
with scale and other substances.
MIZCON Plus maintains the temperature of the cooling
water at the optimum level by controlling the operations of
cooling tower fan and electric heater.
chiller to operate at maximum efficiency and prevents the
cooling water from being frozen.
Features
Contamination resistant 4-electrode sensor:
4-electrode
sensing
contamination serving long operation life with high
measuring accuracy.
Conductivity temperature compensation:
Conductivity measuring accuracy is assured even with
temperature change, preventing over-concentration
and over-blowdown (overfeed) of the cooling water.
Easy installation of the immersion sensor:
The sensor is immersion-type and thus facilitates the
installation.
Conductivity alarm:
Cooling water conductivity out of the preset value (high
limit alarm setpoint) is reported with alarm.
Conductivity / temperature PV (process value) output:
Measured conductivity and temperature are output via
4-20 mA DC analog output. Water quality is thus
constantly monitored for precise quality control.
MIZCON
Cooling Tower Controller
Model R7010W
efficiency
of
chiller
and
This allows the
element
is
resistant
Plus
Model R7010W (controller) with
Part No. 81301430-001 (4-electrode sensor)
Note:
For the 4-electrode sensor, be sure to separately order by its
part number (Part No. 81301430-001 for 4 m long cable or
Part No. 81301430-002 for 20 m long cable).
Temperature control:
to
Cooling water temperature can be controlled with DO
(2 points max.).
Interlock operation:
Input for interlock with the cooling water pump is
equipped.
Wide conductivity range:
Measuring range can be switched between 0-200 and
0-400 mS/m.
Easy installation of the controller main unit:
Quick-fit screwless (clamp) terminals are provided
except power supply line. This facilitates the wiring
work. Besides, DIN rail mounting or screw mounting is
selectable for the controller (main unit) installation.
1
AB-6650
Specifications/Instructions

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Summary of Contents for Azbil Azbil MIZCON Plus

  • Page 1 AB-6650 Specifications/Instructions ™ MIZCON Plus Cooling Tower Controller Model R7010W General ™ MIZCON Plus (also written as ‘MIZCON+’) Model R7010W is a conductivity and temperature controller for cooling water. MIZCON Plus keeps the conductivity of the cooling water at the optimum level and thus precisely controls makeup water.
  • Page 2: Safety Instructions

    If this product is used in a clean room or a place where reliability or control accuracy is particularly required, please contact Azbil Corporation’s sales representative. Azbil Corporation will not bear any responsibility for the results produced by the operators.
  • Page 3 Do not recycle all or part of them, either. • Dispose of the controller and the 4-electrode sensor in accordance with local regulations. Trademark information: MIZCON is a registered trademark of Azbil Corporation in Japan. Model Numbers Controller (main unit) Base model...
  • Page 4: Specifications

    Specifications Controller (main unit) (1/2) Item Specification Power supply Rated voltage 100 V AC to 240 V AC at 50 Hz/60Hz Operating voltage 85 V AC to 264 V AC Power consumption 10 VA or less -20 °C to 50 °C Environmental Rated Ambient temperature...
  • Page 5 (2/2 Item Specification Blow-down valve control operation Differential (DIF) Valve open Valve closed Setpoint (SP) Lower Higher Conductivity Alarm output operation Conductivity high limit alarm High limit of differential (HDIF) (Alarm is turned on by the Alarm ON conductivity over OHSP for 3 Either of these alarms is consecutive minutes.) Alarm OFF...
  • Page 6: Wire Specifications

    4-electrode sensor Item Specification Cooling water: 0 °C to 50 °C (Non-freezing) Environmental Rated Ambient temperature conditions operating Atmospheric air: -10 °C to 50 °C conditions Ambient humidity 0 %RH to 100 % RH Vibration Max. 9.8 m/s (1 G) at 10 Hz to 150 Hz -20 °C to 60 °C Transport / Ambient temperature...
  • Page 7 Dimensions and Parts Identifications Controller (main unit): Model R7010W Power switch Display and setting operation keys Terminal block (for except power supply terminals) Terminals for power supply Figure 1. Dimensions and parts identification: Controller (mm) Process value/setpoint indication LED Control value indication window (to set and display) Unit (mS/m or °C) indication LED Operation standby indication LED Blow-down operation indication LED...
  • Page 8 4-electrode sensor: Part No. 81301430-001 (4 m long cable) / 81301430-002 (20 m long cable) Wire hanging tab for the sensor installation Sensor cable (φ12.5 ) Sampling probe (with the electrodes inside) Figure 3. Dimensions and parts identification: 4-electrode sensor (mm) Rain-proof case: Part No.
  • Page 9: Precautions For Installation

    Installation 1. Controller Precautions for installation • Install the controller main unit inside the rain-proof case (Part No. DY3001A2002) or mount onto DIN rail. To install the controller inside the former version of the rain-proof case (sold on March 31, 2005 or before), replacement plates (Part No.
  • Page 10 Installation procedure: MIZCON Plus controller replacing MIZCON inside the former version of the rain-proof case (Part No. DY3001A2002) To install the controller inside the former version of the rain-proof case sold on March 31, 2005 or before, to replace MIZCON with MIZCON Plus in other words, replacement plates (Part No. 83167610-001, 2 plates/set) are required because the intervals between the mounting holes of the controller and of the case are different.
  • Page 11 Installation procedure: Controller onto DIN rail To mount onto DIN rail, DIN rail mounting brackets (Part No. 83104567-001) are required. Be sure to separately order the brackets. Mount the controller onto the DIN rail so that it does not fall from the DIN rail. Fix the bilateral sides of the controller with DIN rail mounting brackets.
  • Page 12 Clearance of the controller inside the rain-proof case / onto DIN rail DIN rail (unnecessary for the installation inside the rain-proof case) ∗Note: Hatched area shows 50 for rain-proof case clearance required for 100 for DIN rail the controller installation. Figure 12.
  • Page 13: Wiring Procedure

    Wiring WARNING • Be sure to disconnect the power source from MIZCON Plus before wiring the 4-electrode sensor. Electrical shock may result. CAUTION • Before activating the MIZCON Plus, make sure all the wires are correctly connected. Faulty wiring may cause equipment damage.
  • Page 14 3) 4-electrode sensor (6 terminals) Terminal number Terminal indication Description electrode BR (brown) Current electrode (+) electrode RD (red) Voltage electrode (+) electrode BK (black) Voltage electrode (-) Quick-fit screwless electrode YL (yellow) Current electrode (-) / (clamp) terminals Temperature (B2) electrode GN (green) Temperature (B1)
  • Page 15: Operation

    Operation CAUTION • Set the temperature setpoints that satisfy your chiller manufacturer. Default values and setting ranges of the setpoints 1) Default values and setting ranges of the setpoints (for 200mS/m conductivity range) Item Description Indication Default value Setting range 200 mS/m range or 400 mS/m range Conductivity Range...
  • Page 16 Setting Operations 7-segment LEDs indication The settings on this page are available for all the models of MIZCON Plus series. Changeover of PV range Setting of blow-down SP When power is : conductivity :conductivity turned on… (To change 200 to 400 mS/m) (To change 80 to 120 mS/m) ∗...
  • Page 17 The settings on this page are available for all the models of MIZCON Plus series. Continued from the previous page. Setting of HDIF Setting of blow-down DIF Setting of OHSP : conductivity : conductivity : conductivity (To change 5 to 10 mS/m) (To change 100 to 120 mS/m) (To change 5 to 15 mS/m) Press...
  • Page 18 The settings on this page are available for Models R7010WX01 and R7010WX02.. Continued from “Temperature PV” on P.16. Changeover of STT1 Setting of SP1 (output 1 SP) Setting of DIF1 (output 1 DIF) (N.O. or N.C. for output 1) : temperature : temperature (To change 25 to 20 °C) (To change 2 to 2.5 °C)
  • Page 19 The settings on this page are available for Model R7010WX02.. Continued from the previous page. Changeover of STT2 Setting of SP2 (output 2 SP) Setting of DIF2 (output 2 DIF) (N.O. or N.C. for output 2) : temperature : temperature (To change 4 to 3 °C) (To change 2 to 2.5 °C) : temperature...
  • Page 20 Inspection and Maintenance Controller MIZCON Plus controller does not require to be periodically cleaned. Remove the dust covered the top and bottom vent holes (slits) of the controller housing if necessary. 4-electrode sensor Scale and slime coated the electrodes may prevent the electrodes to contact water. Periodically take the 4-electrode sensor out of the cooling water tank to inspect and cleanse.
  • Page 21: Troubleshooting

    Troubleshooting For any problem that is not solved by the corresponding action in the following list, please consult our sale personnel. Problem Action Controller is not turned on. Is the power source (breaker) connected (turned on)? • Is the controller tuned on? Temperature control DO1 and DO2 are not •...
  • Page 24 Specifications are subject to change without notice. Building Systems Company http://www.azbil.com/ Rev. 1.0 Jul. 2012 AB-6650 0.5H-H (W00) (J: AI-6650 Rev. 0.0) Printed in Japan.

This manual is also suitable for:

R701w

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