Panasonic KT7 Instruction Manual

Text of Panasonic KT7 User Guide:

• Panasonic KT7, 1 Instruction manual Temperature Controller KT7 No. KT71E7 2013.05 To prevent accidents arising from the misuse of this controller, please ensure the operator receives this manual. SAFETY PRECAUTIONS Be sure to read these precautions before using our products. The safety precautions are classified into categories: “Warning” and “Caution”. Warning: Procedures which may lead to dangerous conditions and cause death or serious injury, if not carried out properly. Caution : Procedures which may lead to dangerous conditions and cause superficial to medium injury or physical damage or may degrade or damage the product, if not carried out properly. Warning

• Panasonic KT7, 2 1.2 How to read the rated label The rated label is attached to the case. When Heater burnout alarm is added, CT rated current is written in the bracket ( ). (1) Model number, supply voltage, input type, output type, etc. are entered. (2) Lot number is entered. 2. Name and functions of the sections (1) EVT indicator The red LED lights when Event output [Alarm, Loop break alarm or Heater burnout alarm (Option)] is ON. (2) OUT indicator When OUT (control output) is ON, the green LED lights. For DC current output type, this flashes corresponding to the output manipulated variable. (3) T/R indicator The yellow LED flashes during serial communication. (4) AT

• Panasonic KT7, 3 (B) (A) 3.2 External dimensions (Unit: mm) (Fig. 3.2-1) 3.3 CT (Current transformer) external dimensions (Unit: mm) AKT4815 (for 5A, 10A, 20A) AKT4816 (for 50A) (Fig. 3.3-1) 3.4 Mounting to DIN rail Caution Mount the DIN rail horizontally. When DIN rail is mounted vertically, be sure to use commercially available fastening plates at both ends of KT7 series. Mount the KT7 series to the DIN rail so that the KT7 series cannot move. However, if the DIN rail is mounted horizontally in a position susceptible to vibration or shock, the fastening plates must be used as well. Recommended

• 4 Power supply Heater CT Terminal arrangement • OUT : Control output • RELAY: Relay contact output • V/A : DC voltage output/ DC current output • EVT : Event output [Activated when Alarm, Loop break alarm or Heater burnout alarm (option) is ON] • TC : Thermocouple • RTD : Resistance temperature detector • DC : DC current or DC voltage For DC current input, 50 shunt resisto

• Panasonic KT7, 5 5. Setup Wire the power terminals only. After the power is turned on, the sensor input characters and temperature unit are indicated on the PV display and the input range high limit value is indicated on the SV display for approx. 3 seconds (Table 5-1). (If any other value is set during the scaling high limit value setting, the value is indicated on the SV display.) During this time all outputs and the LED indicators are in OFF status. Control will then start, indicating the input value on the PV display and SV on the SV display. (While control output

• Panasonic KT7, 6 OUT proportional cycle setting • Sets the proportional cycle value for OUT. Relay contact output: 30sec Non-contact voltage output: 3sec • Not available for ON/OFF action or DC current output type With the relay contact type, if the proportional cycle time is decreased, the frequency of the relay action increases and the life of the relay contact is shortened. • 1 to 120 seconds Manual reset setting 0.0 • Sets the reset value manually. • Available only for P and PD action. • Proportional band converted value (For DC voltage and cu

• 7 5.3 Auxiliary function setting mode 1 Character (PV display) Name, Description, Setting range Default value (SV display) Set value lock selection Unlock • Locks the set value to prevent setting errors. The setting item to be locked depends on the selection. • If Lock 1 or Lock 2 is selected, PID auto-tuning or auto-reset cannot be carried out. • (Unlock): All

• 8 JPt100 –199.9 to 500.0 : JPt100 –199.9 to 900.0 : Pt100 –200 to 850 : Pt100 –300 to 1500 : JPt100 –200 to 500 : JPt100 –300 to 900 : 4 to 20mA –1999 to 9999: 0 to 20mA –1999 to 9999: 0 to 1V –1999 to 9999: 0 to 5V –1999 to 9999: 1 to 5V –1999 to 9999: 0 to 10V –1999 to 9999: Scaling high limit setting 1370 • Sets the scaling high limi

• 9 Alarm action delayed timer setting 0 seconds • Sets the alarm action delayed time. When the setting time has passed after the input enters alarm output range, the alarm is activated. • Not available if No alarm action is selected during the Alarm type selection. • 0 to 9999 seconds Direct/Reverse control action selection Reverse (Heating) action • Selects either Reverse (Heati

• Panasonic KT7, 10 6. Converter function Caution • The converter function is selectable only for the DC current output type. • When using this controller as a converter, take 1 second into consideration since input/output response time is approx. 1 second. • When switching from converter function to controller function, the control parameter and values set by converter function are held even if the function is switched to controller function. So, correct the control parameters and values which has been set by converter function to the valu

• Panasonic KT7, 11 8. Operation flowchart Outline of operation procedure Operation before running [Step 1 Initial setting] : Set Input type, Alarm type, control action, etc. in Auxiliary function setting mode 2. [Step 2 Adjusting item] : Set PID values and Alarm value in the Sub setting mode. [Step 3 Lock setting] : Set the Set value Lock in Auxiliary function setting mode 1 (If Step 3 is not necessary, skip this step.) [Step 4 Run setting] : Set the SV(desired value) in the Main setting mode. Set value lock PV SV Selection • Make a selection with , keys. • I

• Panasonic KT7, 12 9. Action explanation 9.1 OUT action 9.2 OUT ON/OFF action : Acts ON or OFF. Heating (reverse) action Cooling (direct) action Control action Relay contact output Non-contact voltage output DC current output Indicator (OUT) Green Lit Unlit 0V DC + 0V DC + 12V DC + 12V DC + 20mA DC + 4mA DC + 4mA DC + 20mA DC + ON OFF ON OFF Hysteresis Unlit Lit Hysteresis SV setting SV setting 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 4 3 : Acts ON or OFF. Heating (Reverse) action Cooling (Direct) action Control action C

• Panasonic KT7, 13 Scaling low limit PV SV Set value • Set the value with , keys. Scaling high limit PV SV Set value • Set the value with , keys. Decimal point place PV SV Selection • Select the value with , keys. • Available for DC current, DC voltage input PV filter time constant PV SV Set value • Set the value with , keys. OUT low limit PV SV Set value • Set the value with , keys. • Not available for ON/OFF action OUT high limit PV SV Set value • Set the value with , keys. • Not available for ON/OFF action OUT ON/OFF action hysteresis PV SV Set value • Set the value with , keys. • Available for ON/OFF action Input type PV SV Selection • Make a selection with , key

• Panasonic KT7, 14 9.3 EVT (Alarm) action Terminals 8 & 9 are for the user’s own Alarm (or Loop break alarm/Heater burnout alarm output) indicator, which correlates directly with the EVT indicator. 9.4 EVT (Heater burnout alarm) action : Event (EVT) output terminals 8 and 9 are connected (ON). : Event (EVT) output terminals 8 and 9 are not connected (OFF). Terminals 8 & 9 are for the user’s own Alarm (or Loop break alarm/Heater burnout alarm output) indicator, which correlates directly with the EVT indicator. Heater burnout alarm action ON OFF Heater burnout alarm set point Load current LargeSmall Indicator UnlitLit (EVT) Red High limit alarm Alarm

• Panasonic KT7, 15 10. PID auto-tuning of this controller In order to decide each value of P, I, D and ARW automatically, the auto-tuning process should be made to fluctuate to obtain an optimal value. Sometimes the auto-tuning process will not fluctuate if auto-tuning is performed at or near room temperature. Therefore auto-tuning might not finish normally. (A) In the case of a large difference between the SV and processing temperature as the temperature is rising When AT bias is set to 20 , the AT process will fluctuate at the temperature 20 lower than the SV. Temperature 20 lower than the SV (1) Calculating PID constant

• Panasonic KT7, 16 Input Thermocouple : K, J, R, S, B, E, T, N, PL- , C (W/Re5-26) External resistance; 100 or less However, for thermocouple B, external resistance, 40 or less RTD : Pt100, JPt100, 3-wire system Allowable input lead wire resistance (10 or less per wire) DC current : 0 to 20mA DC, 4 to 20mA DC, input impedance 50 [Connect 50 shunt resistor (AKT4811, sold separately) between input terminals 5 and 6] Allowable input current: 50mA or less DC voltage : 0 to 1V DC 0 to 5V DC, 1 to 5V DC, 0 to 10V DC Input impedance 1M or more 100k or more Allowable input voltage 5V or less 15V

• Panasonic KT7, 17 Alarm Energized/Deenergized: Alarm (EVT) output Energized/Deenergized can be selected. Alarm Energized Alarm Deenergized Red (EVT) LED Lights Lights EVT output ON OFF Alarm HOLD function: Once the alarm is activated, alarm output is held until the power is turned off. • Loop break alarm output [Loop break alarm, Alarm and Heater burnout alarm (option) utilize common output terminals.] Detects heater burnout, sensor burnout and actuator trouble. Setting range: Loop break alarm action time setting: 0 to 200 minutes Loop break alarm action span setting Thermocouple, RTD input: 0 to 150 (

• Panasonic KT7, 18 [Input abnormality indication] Controller/Converter function selection Output status Controller Converter OUT OUT Output status selection when input abnormal Contents and Indication Direct action Reverse action Direct action Reverse action ON (20mA) or OUT high limit value (*) Overscale Measured value has exceeded Indication range high limit value. " " flashes. OFF (4mA) or OUT low limit value OFF(4mA) or OUT low limit value ON (20mA) or OUT high limit value OFF (4mA) or OUT low limit value O

• Panasonic KT7, 19 Heater burnout alarm (option), Loop break alarm and Alarm utilize common output terminals. This option cannot be applied to DC current output type. Rating : 5A, 10A, 20A, 50A (Must be specified) Setting range : 5A, 0.0 to 5.0A (Off when set to 0.0) 10A, 0.0 to 10.0A (Off when set to 0.0) 20A, 0.0 to 20.0A (Off when set to 0.0) 50A, 0.0 to 50.0A (Off when set to 0.0) Setting accuracy: 5% of the rated value Action : ON/OFF action Output : Open collector, Control capacity, 24V DC 0.1A (Max.) Serial communication (option) The following operations can be carried out from the external computer. (1) Reading a

• Panasonic KT7, 20 The PV display keeps indicating the value which was set during Scaling low limit setting. • Check whether the input signal source for DC voltage (0 to 5V DC, 0 to 10V DC) and DC current (0 to 20mA DC) is disconnected. How to check whether the input signal wire is disconnected [DC voltage (0 to 5V DC, 0 to 10V DC)] If the input to the input terminals of the instrument is 1V DC and if the value corresponding to 1V DC is indicated, the instrument is likely to be operating normally, however, the signal wire may be disconnected. [DC current (0 to 20mA DC)] If the input to the input terminals of the instrument is 1mA

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Panasonic KT7 Instruction manual 11-04-2023 12

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