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Installation 

19 

 

Table of Parameters for DC Option: RS-485 Modbus

 

Parameter Name 

Range 

Map 1  Map 2 

Default 

Data Type 

Read/ 

Write 

H Series Meaning 

Analog Input 

-1999.000 to 9999.000 °F 

-1128.000 to 5537.000 °C 

360 

360 

-- 

Float 

Process Value 

Analog Input Error 

None (61) 

Open (65) 
Fail (32) 

Shorted (127) 
Measurement Error (140) 

Bad Calibration Data (139) 

Ambient Error (9) 
RTD Error (141) 

Not Sourced (246) 

362 

362 

None 

UINT 

Process Value Sensor Error 

Calibration Offset 

-1999.000 to 9999.000 °F 

-1128.000 to 5537.000 °C 

382 

382 

Factory Set 

Float 

RWES 

Process Value Calibration 

Digital in 5 

Inactive (41) 
Active (5) 

1328 

1568 

-- 

UINT 

Flow Activation 

Digital out 6 

Off (62) 
On (63) 

1042 

1162 

-- 

UINT 

AL Only Alarm Status 

 

EZ-KEY 

Inactive (41) 
Active (5) 

1328 

1608 

-- 

UINT 

EZ-Key 

 

Control Mode Active 

Off (62) 
Auto (10) 
Manual (54) 

1882 

2362 

Auto 

UINT 

Control Loop Mode 

 

Heat Power 

0.0 to 100.0% 

1904 

2384 

-- 

Float 

Duty Cycle Output % 

Set Point 

-1999.000 to 9999.000 °F 

-1128.000 to 5537.000 °C 

2172 

2652 

-- 

Float 

Heater Set Point 

Remote Set Point 

 

No (59) 
Yes (106) 

220 

2680 

No 

UINT 

RWES 

Remote Set Point Enable 

 

Remote Set Point Type 

 

Auto (10) 
Manual (54) 

2202 

2682 

No 

UINT 

RWES 

Remote Set Point Control Mode 

Process Value 

 

-1999.000 to 9999.000 °F 

-1128.000 to 5537.000 °C 

402 

402 

 

Float 

Process Value 

 

Control Mode 

 

OFF (62) 
Auto (10) 
Manual (54) 

1880 

2360 

Auto 

UINT 

RWES 

Control Loop Mode 

 

Close Loop Set Point 

 

40-160 std 
40-170 T170 Option 
40-180 T180 Option 
40-190 T190 Option 

2160 

 

2640 

 

Factory Set 

Float 

RWES 

 
Heater Set Point 

 

Open Loop Set Point 

0 to 100.0% 

2162 

2642 

-- 

UINT 

RWES 

Manual Mode Set Point 

Display Units 

 

Fahrenheit (30) 
Celsius (15) 

1838 

2308 

°F 

UINT 

RWES 

Controller Display Units 

 

Address Modbus 

1-247 

2482 

2962 

UINT 

RWE 

Modbus Address 

Baud Rate 

 

9600 (188) 
19200 (189) 
38400 (190) 

2484 

2964 

9600 

UINT 

RWE 

Modbus Baud Rate 

 

Parity Modbus 

None (61) 
Even (191) 
Odd (192) 

2486 

2966 

None 

UINT 

RWE 

Modbus Parity 

Modbus Units 

 

Fahrenheit (30) 

Celsius (15) 

2490 

2970 

°F 

UINT 

RWE 

Communication Units 

 

Modbus Word Order 

 

Low-High (1331) 
High-Low (1330) 

2488 

2968 

Low-High 

UINT 

RWE 

Modbus Word Order 

 

Non-Volatile Save 

 

Yes (106) 
No (59) 

2494 

2974 

Yes 

UINT 

RWE 

If set to yes, all values to the 
control will be saved from 
EEPROM 

 
NOTICE!      For adjusting Modbus address, baud rate and 

parity, customer needs to set on controller per 

manufacturer's (Watlow) manual.

 

 

 

Legend 

Uint=Unsigned 16 bit int     string=ACSII (8 bit per character) 
Dint=Long 32 bit                   float=IEEE 754 32 bit  
RWES=Readable, Writeable, EEPROM (saved), User Set (saved) 

 

Summary of Contents for H Series

Page 1: ...TEH006 LCTEH010 LCTEHV010 LCTEH015 LCTEHV015 LCTEH018 LCTEHV018 LCTEH025 Voltage options 208V Single Three Phase 240V Single Three Phase 277V Single Phase 380V Three Phase 400V Three Phase 415V Three...

Page 2: ...allation 6 7 Electric Installation 8 Start Up Check List 9 Start Up 10 Digital Controller Operation 11 NEMA 4 4X Digital Controller Operation 12 Perform Operational Test No 1 13 Perform Operational Te...

Page 3: ...nnect power supply before performing any work in the enclosure Failure to ground this system may result in death or serious injury Make sure that all water supply lines have been flushed and then comp...

Page 4: ...0 F 60 C For applications utilizing quick close valves or solenoid valves it is important to install a hammer arrestor or surge tank close to the point of use to absorb pressure spikes Installation Co...

Page 5: ...and other plumbing for service maintenance Set heater in a vertical upright position with the water outlet located at top Depending on the application the unit may also be installed rotated clockwise...

Page 6: ...any drop to eliminate trapped air Install one union on the water inlet side of the heater and another union upstream of the 100 Mesh 150 micron y strainer Install one union on the water outlet side of...

Page 7: ...Installation 7 2 Plumbing Installation cont...

Page 8: ...Table 310 15 for 75 C insulated copper wire 30 C Ambient Aluminum wire requires larger gauges Not all available optional voltages are listed in the table For standard enclosures remove the four screws...

Page 9: ...nstalled after pressure and temperature relief valve on outlet if required by local or national plumbing codes If the hot water process is not at the highest point in the plumbing loop then an automat...

Page 10: ...ge elements and cause heater malfunction Turn on the connected process observe output temperature rise to setpoint On standard controller set point and output temperatures are located side by side On...

Page 11: ...the controller Keys and Displays Function Setpoint Up and Down Buttons In the Home Page adjusts the set point in the right display In other pages changes the upper display to a highter or lower value...

Page 12: ...e of the controller Keys and Displays Function Setpoint Up and Down Buttons In the Home Page adjusts the set point in the right display In other pages changes the upper display to a highter or lower v...

Page 13: ...he inlet water temperature is equal to or greater than the temperature set on the digital controller 9 Perform Operational Test No 2 Each model has precise specifications for temperature rise capabili...

Page 14: ...tuation FDS Fused Disconnect Internal fused disconnect interlocks with enclosure door when energized prohibiting access to a live cabinet Select the FDS option for an additional level of safety and co...

Page 15: ...ere hard water sediment is present in the water To clean the Y Strainer 1 Turn the power off at the circuit breaker panel 2 Shut off the installer supplied cold water isolation valve to the heater 3 R...

Page 16: ...mperature or faulty sensor Turn power off Check for loose or disconnected wires Check the incoming service connection Voltage must match name plate rated voltage Labels are located on the upper left o...

Page 17: ...urce A load voltage reading is also helpful Turn power OFF before recording any Ohm readings If the above steps do not solve the problem some additional checks may be performed Follow the schematic to...

Page 18: ...DC Option Pin Out D1 Option Pin Out Pin Name Description Pin Name Description T R 2 RS 485 Transmit Receive Non Inverting Input Output Negative 3 Return Current Path for Current Pin 4 3 Signal Ground...

Page 19: ...UINT RWES Remote Set Point Control Mode Process Value 1999 000 to 9999 000 F 1128 000 to 5537 000 C 402 402 Float R Process Value Control Mode OFF 62 Auto 10 Manual 54 1880 2360 Auto UINT RWES Contro...

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