MLS300 Controller

M L S 3 0 0
MLS300: Modular
Loop System
Providing up to
32 Zones of Control
Features and Benefits
The Watlow Anafaze MLS300 SERIES is a powerful line
of controllers that combines performance and flexibility with
compact design. The 16 and 32 loop versions provide
complete control solutions for a broad range of applications.
Support for multiple types of sensor inputs is available;
including thermocouples, RTDs, linear voltage, current and
frequency. Each controller can operate as a stand-alone
system, and includes built-in serial communications for
computer interface and data acquisition. Optional,
programmable ramp and soak features allow complex
batch processing and sequencing. The enhanced
features option offers cascade, ratio and differential control,
process variable retransmit and remote analog setpoint.
PID control of up to 16 heat and cool loops or
32 heat loops
• Minimal panel space per loop
• Reduced installation time
• More reliable: fewer parts mean fewer failures
• Less time tuning
• Achieve excellent control with less expertise
Menu guided operation with full text display
• Set up controller quickly
• Easy to operate
Store and recall eight jobs
• Change quickly from one process to another
Sensor fail detection
• Reduce time troubleshooting reversed, shorted and
open sensors
The remote analog input options allow for shorter sensor
wires and flexible mounting which reduces sensor cost and
installation time. Watlow’s new CIM option provides OEMs
with a space and labor saving alternative to the standard
AIM module. This innovation allows users to construct a
wiring harness to attach sensors via a connector instead of
connecting individual wires to the controller.
High/low process and deviation alarms for each input
• Configure alarms as needed to integrate with PLC or
other control elements
The MLS300 SERIES controllers are UL® and C-UL® listed,
meet the requirements of the European Community EMC
Directive and carry the CE mark.
Multiple and mixed inputs
• Easy to change sensor types at the last minute
• Less to learn, less inventory
34 digital outputs
• Flexible configuration: use outputs as needed for control
and alarms
TIA/EIA-232 and 485 communications
• Use software to configure and operate
• Integrate with other controllers and software
CIM300 option
• Small footprint per loop
• Reduced installation time
314 Westridge Drive
Watsonville, California 95076 USA
Phone: +1 (507) 454-5300
Fax: +1 (507) 452-4507
ISO 9001
Registered Company
Watsonville, California USA
UL® and C-UL® are registered trademarks of Underwriter’s Laboratories, Inc.
© 2003 Watlow Electric Manufacturing Company
Printed in the USA on Recycled Paper, 15% Postconsumer Waste
DAC and SDAC Modules
WATVIEW™ Software
The optional DAC and SDAC modules are available for
Watlow Anafaze MLS300 controllers.
WATVIEW™ is an optional, Windows -based HumanMachine Interface (HMI) program that can be used as
the primary interface to one or more Watlow controllers.
WATVIEW provides channel setup and monitoring of multiple
controllers at the same time. The easy-to-use Graphical User
Interface (GUI) allows you to set control parameters, create
user-defined recipes, view and manage alarms, set up and
view trend plots and real-time data and export logged data
to spreadsheet applications. WATVIEW requires less
configuration time than other more expensive packages,
because it is designed specifically for Watlow controllers.
25 mm
(1.00 in.)
The DAC (digital to analog converter) converts one or two
of the controller’s distributed zero crossing (DZC) output
signals to analog signals. Each output is field configurable
for 4-20mAÎ(dc), 0-5VÎ(dc), or 0-10VÎ(dc).
The SDAC (serial digital to analog converter) converts one
controller output to a precise analog voltage or current
signal. The unit is typically used for process variable
retransmit, open-loop control, motor or belt speed control
or phase-angle fired SCR power controllers. The SDAC
bears the CE mark and is UL® and C-UL® listed.
188 mm
(7.40 in.)
41 mm*
(1.60 in.)
50 mm
(1.96 in.)
*15 mm (0.60 in.) with
Right Angle SCSI Connector
Processor Module (Side)
50 mm
(1.96 in.)
96 mm
(3.78 in.)
Processor Module (Front)
146 mm H
(5.75 in.)
165 mm L
(6.5 in.)
70 mm
(2.75 in.)
95 mm
(3.75 in.)
191 mm
(7.50 in.)
127 mm W
(5.0 in.)
Analog Input Module
(AIM332 shown)
Windows® is a registered trademark of Microsoft Corporation.
Compact Input Module
(CIM332 shown)
MLS300 Specifications
Operator Interface
• 32-character vacuum fluorescent display
• Eight-key keypad to access guided menus and prompts,
enter passkey sequence, set values, switch between single
channel and multiple channel displays
• Controller’s configuration can be loaded through the
standard serial port
Analog Inputs
• MLS316 16 Differential
• MLS332 32 Differential
Noise Rejection
• 120dB at 60Hz
Temperature Coefficient
• 40 ppm/°C
Temperature Sensors
• Thermocouples: User selectable type, direct connection,
linearization, reference junction compensation, reversed
and shorted T/C detection and upscale break protection
with output averaging.
• RTD: 2 or 3 wire, platinum, 100Ω @ 0°C,
DIN 0.003850Ω/Ω/°C curve, user-selectable range.
Two user-selectable ranges offer different resolutions.
Requires special inputs. See Ordering Information.
Input Range and Accuracy
Range (°C)
Range (°F)
Type B
66 to 1760°C
150 to 3200°F
Type E
-200 to 787°C
-328 to 1448°F
Type J
-212 to 760°C
-350 to 1400°F
Type K
-268 to 1371°C
-450 to 2500°F
Type R
-18 to 1766°C
0 to 3210°F
Type S
-18 to 1760°C
0 to 3200°F
Type T
-268 to 399°C
-450 to 750°F
-100.0 to 275°C -148.0 to 527.0°F
-120 to 840°C
-184 to 1544°F
Note: Accuracy @ 25°C (77°F) ambient. Valid for 10 to 100
percent of span except Type B, which is specified for 427°C
(800°F) to 1760°C (3200°F). RTD is for 100 percent of span.
Linear Voltage and Current Inputs
Requires special inputs. See Ordering Information.
Other ranges available. Consult factory.
Pulse Input
One TTL-level square wave input up to 2kHz
Input Sampling Rate @ 60Hz
Each channel has the following scans per second:
• MLS316: 1.5 samples per second, (update time: 0.667 sec.)
• MLS332: 0.75 samples per second, (update time: 1.33 sec.)
Internal Measurement Resolution
• 0.006 percent, greater than 14 bits
• Automatic zero and full scale
Digital Inputs
• TTL level used for selecting recipes or jobs, or R/S triggers
• Eight inputs and one pulse input with 50-pin terminal board
Modbus™ is a registered trademark of AEG Schneider Automation.
Digital Outputs
• 34 outputs available with 50-pin terminal board option
• One or two control outputs are user assigned for each loop
• Each control output can be configured for on-off, time
proportioning or distributed zero crossing
• Outputs sink up to 60mA each at 5VÎ(dc)
Alarm Outputs
• Independent process and deviation alarms for each channel
• Alarms can operate any output not used for control
• Programmable deadband, delay and startup suppression
• Global alarm output activates when any alarm occurs
• Watchdog output indicates controller is functioning correctly
Serial Interface
• EIA/TIA-232 or EIA/TIA-485
Baud Rate
• 2400, 9600 or 19200, user-selectable
Communication Protocol
• Modbus™ RTU
Line Voltage/Power
• 15 to 24VÎ(dc) ± 3VÎ(dc) @ 1A
Agency Approvals
• UL®, C-UL® Listed: UL® 916, Standard for Energy
Management Equipment
• CE Mark: Electromagnetic Compatibility (EMC) Directive
Firmware Options
Choose firmware with the features needed for the application:
• Standard—includes closed-loop PID control, auto-tune,
alarms, job memory and failed sensor detection.
• Extruder— includes the standard firmware features, with
PID control specifically adapted for plastic extruders.
• Ramp and Soak—includes the standard firmware features
with the addition of ramp and soak and process variable
retransmit. Each channel can be configured for standard
PID control or ramp and soak operation. Unused control
outputs on any channel can be configured for retransmit.
• Enhanced Features— includes the standard firmware
features with the addition of process variable retransmit,
remote analog setpoint, cascade control, ratio control
and differential control algorithms. Each channel can be
configured for standard PID control or one of the other
control algorithms. Each channel of cascade control or
remote analog setpoint requires two controller channels.
Unused control outputs on any channel can be configured
for retransmit.
Because the MLS300 has no onboard analog outputs,
applications that use process variable retransmit typically
require one SDAC module per retransmitted signal.
Input Module Options
Choose the input module appropriate for the application:
• AIM316 and AIM332 provides screw terminations for
16 or 32 sensors
• CIM316 and CIM332 provides DB-50 connector
terminations for 16 or 32 sensors in a compact size
Ordering Information
MLS300 Code Number
- 0 0-
The following accessories are available for the MLS300.
Input Module
16 = 16 channel analog input module (AIM316)
32 = 32 channel analog input module (AIM332)
C1 = 16 channel compact input module (CIM316)
C2 = 32 channel compact input module (CIM332)
Processor Module (MLS300-PM)
0 = Input module only (No MLS300-PM)
1 = MLS300-PM with standard firmware
2 = MLS300-PM with extruder firmware
3 = MLS300-PM with enhanced features firmware
4 = MLS300-PM with ramp and soak firmware
Terminal Board
0 = No terminal board accessory
1 = 50-pin terminal board, includes 3 foot SCSI cable
Power Supply
0 = None
2 = 120/240V~(ac) 50/60Hz power supply adapter
(5VÎ[dc] @ 4A, 15VÎ[dc] @ 1.2A) CE Approved
SCSI Cables (For use with 50-pin terminal board)
0 = No special SCSI cable
(3 foot cable is included with 50-pin terminal board)
1 = 6 foot SCSI cable
2 = 3 foot right angle SCSI cable
3 = 6 foot right angle SCSI cable
Serial Communication Cables
(For communications with computer)
0 = No serial comm. cable
1 = 10 foot RS-232 comm. cable, DB-9 female/RJ12 phone plug
2 = 25 foot RS-232 comm. cable, DB-9 female/RJ12 phone plug
3 = 50 foot RS-232 comm. cable, DB-9 female/RJ12 phone plug
7 = RS-485 terminal block with 2 foot cable
8 = RS-485 terminal block with 4 foot cable
Module Interconnect Cables
0 = No special cable (4 foot cable comes with input module)
1 = 10 foot cable, RJ45 connector/RJ45 connector
2 = 25 foot cable, RJ45 connector/RJ45 connector
Serial Communications Jumper
0 = EIA-TIA-232
1 = EIA-TIA-485
2 = EIA-TIA-485 Terminated
Special Inputs
(Standard unit is configured for thermocouples and -10 to 60mV
linear inputs. For other sensors, order special inputs.)
00 = Thermocouples and -10 to 60mV inputs only
XX = Number of current, voltage, or RTD inputs. Include
leading zero as needed.
ML S300 SI
Software Ordering Information
WATVIEW Human Machine Interface software supports
MLS300 SERIES controllers with standard, enhanced features
or extruder firmware option.
Configurator Edition
Includes spreadsheet display, setup screens, recipe
manager without calendar start, communication
diagnostics, password security, online help, Active X
(OLE 2.0) server.
Runtime Edition
Includes all the features of the Configurator edition plus data
logging, trend graphing, alarm management, recipe calendar
start, and user event log
Developer Edition
Includes all the features of the Runtime edition plus
capability of developing custom screens.
Ordering Information
Code Number
1 = DAC 2 each, 0 to 5VÎ(dc) outputs
2 = DAC 2 each, 0 to 10VÎ(dc) outputs
3 = DAC 2 each, 4 to 20mAÎ(dc) outputs
4 = Serial digital to analog converter module (SDAC)
Power Supply
A = None
C = 120/240VÅ(ac), 50/60Hz power supply adapter,
(5VÎ[dc] @ 4A and 15VÎ[dc] @ 1.2A)
Powers up to 13 SDACs or 12 DACs
Your Authorized Watlow Distributor Is:
Special Input Type
20 = RTD 1: 0.1˚ Platinum, -100 to 275˚C (-148 to 527˚F)
21 = RTD 2: 1˚ Platinum, -120 to 840˚C (-184 to 1544˚F)
43 = 0-10mAÎ(dc)
44 = 0-20mAÎ(dc)/4-20mAÎ(dc)
50 = 0-100mVÎ(dc)
52 = 0-500mVÎ(dc)
53 = 0-1VÎ(dc)
55 = 0-5VÎ(dc)
56 = 0-10VÎ(dc)
57 = 0-12VÎ(dc)
Start Channel
XX = Channel Number XX
End Channel
XX = Channel Number XX
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