Watlow PM PLUS Quick Start Guide

QUICK START

GUIDE

PM PLUS™ ControLLer

for configurations:
PM6 _ _ [E,F,C] [J,C,H] - _ AAA [P,V] _ _

For assistance contact Watlow: www.watlow.com

1-800-WATLOW2 (1-800-928-5692)

[e-mail]

Document #10-39213 Rev. A

Dec. 4, 2019

CONTROLLER INTERFACE

Up/Increment Key

Numeric Slider

Down/Decrement Key

Function Key

Back/Forward Select Arrows

Home

• Scroll up or down lists
using the + or - keys.

• Increase or decrease
numeric parameters
with the slider.

• Select items or move to lists
using the forward arrow.

• Return to the previous selection
with the back arrow.

• Return to the home screen from
any screen with the Home button.

1 - MOUNT TO PANEL

1. Make the panel cutout using the
measurements in figure 1.

2. Remove the green terminal
connectors and the mounting collar
assembly.

3. Insert the controller into the panel
cutout from the front.

4. Orient the collar base so the flat side
faces front and the screw openings
are on the sides (see figure 2), then slide the base over the
back of the controller.

5. Slide the mounting bracket over the controller with the
screws aligned to the collar base. Push the bracket gently
but firmly until the hooks snap into the slots in the case.

6. Tighten the two #6-19 x 1.5 in. screws with a Phillips
screwdriver until the device is flush to the panel (3 to 4 in­lbs torque).

7. Reinstall the terminal connectors to their original locations.
(Or first connect field wiring as indicated in this guide and
then reinstall the connectors).

44.96 to 45.47 mm
(1.77 to 1.79 in.)

44.96 to 45.47 mm
(1.77 to 1.79 in.)

Figure 1

NOTE: Mounting requires access to
the back of the panel.

Figure 2

Figure 3

2 - CONNECT THE SENSOR INPUT

Connect your sensor as
indicated in the diagram for
your sensor input. Figure
4 is an example illustrating
the connection shown for a
Thermocouple.

Thermocouple

–

S1

+

R1

Process Voltage or Current

Voltage: 0 to 50 mV or 0 to 10V@ 20kΩ
Current: 0 to 20 mA @ 100Ω

T1

–

S1

+

R1

volts

+
–

T1
S1
R1

amperes

Figure 4: Thermocouple Wiring Example

Platinum 100Ω or 1000Ω RTD

20Ω max. round trip lead resistance

T1

S3

S1

S1

R1

2-wire

S2

S3

S1

T1
S1
R1

3-wire

3 - WIRE OUTPUT 1

Refer to the wiring diagram for your configuration
code and connect to the slots indicated.

PM6_ _ C _ - _ _ _ _ _ _ _: Switched DC or Open Collector

Internal Circuit

Common

–

24V(dc)

+

X1
W
Y1

1

+

Switched DC

Load

–

Open Collector

–

Power Supply

–

Load

+

+

PM6_ _ E _ - _ _ _ _ _ _ _: 5A Form C Relay

Internal Circuit

Normally

Open

5A @240 V(ac) or 30 V (dc)

Load

PM6_ _ F _ - _ _ _ _ _ _ _: Universal Process

L1
K1

J1

Normally

Closed

Common

AC

Load

Internal Circuit

–

0 to 10 V

4 to 20mA

+

+

F1
G1
H1

Voltage Load Current Loador

Load

Figure 5: Switched DC Output Wiring

0 to 20 mA: 800 Ω max. load
0 to 10V: 1kΩ min. load

Load

4 - WIRE OUTPUT 2

PM6_ _ _ J - _ _ _ _ _ _ _: 5A Form A Relay

Normally Open

L2

Load

K2

–

+

Normally Open

L2

Common

W

2

Y2

Load

Internal Circuit

PM6_ _ _ C - _ _ _ _ _ _ _: Switched DC

Common

24V(dc)

Internal Circuit

PM6_ _ _ H - _ _ _ _ _ _ _: No-Arc Relay

K2

Internal Circuit

Common

AC

Load

AC

5 - CONNECT POWER

6 - SET UP THE SENSOR INPUT

7 - SET UP OUTPUTS

Repeat for all outputs

Connect the power source for your

configuration code:

PM6 _ [1,2,3,4] _ _ - _ _ _ _ _ _ _

1 or 2:120-240 V (ac)

3 or 4: 24 V (ac or dc)

CAUTION

Do not connect high voltage to a controller that

requires low voltage.

8 - SET UP ALARM TYPES / SIDES

A

larm Types

process: alarm set points
are set directly

deviation: alarm set points
are relative to the control
loop’s set point.

Off: no alarm occurs

Alarm Sides

high: alarm when process
is above high alarm set
point.

low: alarm when process
is below low alarm set
point.

both: high and low alarms
are active.

Alarm sides allow you to
set a high alarm, a low
alarm, or both.

Alarm Type

1. From Home, tap the forward arrow to go to
Operations, then scroll to and select Setup.

2. Scroll to and select Alarm.

3. Scroll to and select Alarm 1, 2, 3, or 4.

4. Scroll to and select Alarm Type.

5. Scroll to and select the type: process,

deviation, or off

Alarm Sides

6. Use the back arrow to return to Alarm 1, 2, 3,

or 4.

7. Scroll to and select Alarm Sides.

8. Scroll to and select the desired sides option:

high, low, or both.

9. Use the back arrow to return to the Alarm list.

10. Scroll to the Alarm High Set Point or Alarm

Low Set Point, as necessary for your sides
selection.

Sensor Types

thermocouple

millivolts

volts

milliamp

100Ω RTD

1000Ω RTD

potentiometer

analog input off

Repeat for remaining alarms

1. From Home, tap the forward arrow to go to Operations.

2. Scroll to Setup using the +/- keys then press forward arrow

3. Scroll to and select Analog Input.

4. Scroll to and select Sensor Type.

5. Scroll to and select your sensor type.

6. If you select Thermocouple, a TC Linearization list

7. If you select 100Ω or 1000Ω RTD, press back arrow to

to select it.

opens. Use the +/- keys to find the correct type: J, K, N,
R, S, or T.

return to Sensor Type, scroll to and select RTD Leads,
then select 2 or 3, as needed for your sensor.

9 - CONTROL LOOP MODE, SET POINT, AUTOTUNE

NOTES: By default

the control loop Heat
algorithim is enabled
for PID control and the
Cool algorithim is OFF.
To enable, go to Control

Loop.

CAUTION: Autotune

turns on the loop’s heat
output until the process
value exceeds 90% of the
set point, then turns the
output off and repeats
this. When finished the
loop controls at the set
point. Before starting
Autotune, consider if it is
safe to do so.

The system must
be operational for
autotuning to select PID
settings.

Output Functions

heat control

cool control

event a

event b

alarm

output off

Control Mode

1. From Home, tap the forward arrow to go to
Operations.

2. Scroll to and select Setup.

3. Scroll to and select Control Loop.

4. Scroll to and select Control Mode.

5. Select Off, Auto, or Manual.

Auto: loop adjusts output so process matches set point.
Manual: user sets control loop output in percent power.
Off: no control loop output

Control Loop Set Point

1. Press the Home button to return to the
Home screen.

2. Use the numeric slider or the +/-keys to
choose the set point.

Autotune

1. From Setup, scroll to and select Control
Loop.

2. Scroll to and select AutoTune.

3. Select Yes.

1. From Home, tap the forward arrow to go to Operations.

2. Scroll to and select Setup.

3. Scroll to and select the Output list.

4. Scroll to Output 1 and press forward arrow to select it.

5. Scroll and select Output Function.

6. Scroll up or down the list to select the output function, then use
the back arrow to return to the Output list and select the settings
for that Output function:

• For alarm outputs, select Output Function Instance, then select
Alarm Instance 1 - 4.

• For heat or cool outputs, set the Time Base.

• For a Fixed Time Base, select Output Time Base and use
the numeric slider to set the time base cycle.

• If you have a Switched DC or Open Collector and prefer a
Variable Time Base, select Output Low Power Scale and set
it with the numeric slider. Use the back arrow to return to Output,
select Output High Power Scale, and set it with the numeric slider.

Please reference the electronic User Guide for Third Party
Software Licensing statements.