Emerson PMAC II Solo User manual

Pulse Modulating and Anti-Sweat

Control (PMAC II Solo) Installation and

Operation Manual

026-1503 Rev 0

Emerson

1065 Big Shanty Road NW, Suite 100

Kennesaw, GA 30144 USA

Phone: 770-425-2724

Fax: 770-425-9319

Please Note: This manual covers only the PMAC II Solo (P/N 851-1104) model. If information is



needed on the PMAC II (network version), consult the PMAC II manual (P/N 026-1501).

PMAC II Solo I&O Manual Table of Contents • i

Table of Contents

1 OVERVIEW ................................................................................................................................................................... 1

1.1. FEATURES ..................................................................................................................................................................... 1

1.2. INSTALLATION .............................................................................................................................................................. 1

1.2.1. Location and Wiring ............................................................................................................................................. 1

1.3. SENSOR MOUNTING AND WIRING ................................................................................................................................ 2

1.3.1. Mounting............................................................................................................................................................... 2

1.3.1.1. Indoor Temperature Sensor ................................................................................................................................................ 2

1.3.1.2. Indoor Relative Humidity Sensor ....................................................................................................................................... 2

1.3.2. Wiring.................................................................................................................................................................... 3

1.3.2.1. Wiring for RH Sensor ......................................................................................................................................................... 3

1.3.2.2. Sensor Cable Type .............................................................................................................................................................. 3

1.3.2.3. Wire Connections ............................................................................................................................................................... 4

1.4. UC12PG-R OUTPUT MAPPING..................................................................................................................................... 4

1.5. PROGRAMMING THE UC12PG-R CONTROLLER ON THE PMAC II SOLO PANEL ......................................................... 4

1.5.1. Keypad .................................................................................................................................................................. 4

1.5.2. How the Setpoints Work........................................................................................................................................ 4

1.5.3. Logging Into the UC12PG-R ................................................................................................................................ 4

1.5.4. Entering/Changing Setpoints................................................................................................................................ 5

1.5.4.1. Setting Time/Date ............................................................................................................................................................... 5

1.5.4.2. Setting Dewpoints............................................................................................................................................................... 6

1.5.4.3. Setting Pulse Percentages ................................................................................................................................................... 6

1.5.4.4. Setting Load Shed ............................................................................................................................................................... 7

1.5.4.5. Setting Temperature and RH % Offsets ............................................................................................................................. 7

1.5.4.6. Setting the Sensor Fail Output ............................................................................................................................................ 7

1.5.5. Alarms................................................................................................................................................................... 8

1.5.5.1. Navigating the Alarm Screens ............................................................................................................................................ 8

1.5.5.2. Viewing the Alarm Screens ................................................................................................................................................ 8

1.5.5.3. Alarm Types ....................................................................................................................................................................... 8

RH Sensor Error 8

Temp Sensor Fail 9

PMAC High Temp 9

Normal Power On Reset 9

1.5.6. Percentage On Times............................................................................................................................................ 9

1.5.6.1. Viewing the Percentage On Time Screens ......................................................................................................................... 9

1.5.7. Status Screens ..................................................................................................................................................... 10

1.5.7.1. Viewing Status Screens .................................................................................................................................................... 11

Features Overview • 1

1 Overview

The PMAC II Solo is a solid state, anti-sweat heater

controller designed to dramatically reduce the cost of oper-

ating anti-sweat heaters on low-temperature door-type cas-

es found in most supermarkets.

Normally, anti-sweat heaters operate continuously with

no controls, even though 100% operation is required only

when in-store humidity levels are high. A PMAC II Solo

provides a means for pulsing power to the heaters based on

environmental conditions, so that heaters will be on for less

time during periods where the in-store dewpoint is low.

This reduces operating costs by limiting heater operation,

and increases heater life by limiting heat cycle fatigue since

the heaters are rarely turned off completely.

The PMAC II Solo performs all anti-sweat functions in-

dependently of a central Einstein, E2, or REFLECS con-

troller. The PMAC II Solo uses an Intellecs UC12PG-R

microcontroller mounted within the panel to control of all

anti-sweat heaters channels based on dewpoint (calculated

from relative humidity and temperature inputs) without

need for a central CPC site control system.

The UC12PG-R does not support multiple zone control.

All heaters are controlled by the same setpoint and dew-

point inputs.

1.1. Features

• Full Solid-State Control

• Quiet Operation

• Easily added to existing systems

• Controlled by the store environment (humidity and

temperature)

• Centrally-located panel

• Easy installation

1.2. Installation

This section of the manual covers wiring and installa-

tion for the PMAC II Solo.

1.2.1. Location and Wiring

1. Mount the PMAC II Solo in a central location

such as a motor or electrical room. The panel

should be in an area where there is plenty of

ventilation (e.g., not in a closet). Keep a 6-12

inch clearance on the top and bottom for

proper air flow. The room’s ambient tempera-

ture should always be below 100° F. See Fig-

ure 1-2 for dimensions.

Figure 1-1 - PMAC II Solo Detail

Figure 1-2 - PMAC II Solo Dimensions

WARNING: For proper cooling, the door

must be closed at times when unit is in opera-

tion.

24.0”

20.0”

8.0”

Mounting

Holes

16.75”

17.8”

Sensor Mounting and Wiring Overview • 2

2. Provide 120 VAC (15 amp circuit) to the

PMAC II Solo panel through a store circuit

breaker. See the layout design in Figure 1-3.

3. Provide power to the case heaters from the

store circuit breaker panel through the PMAC

II Solo panel terminal strip using #10-12

AWG wire, as shown in Figure 1-4.

Additional setup steps required are:

1. Wire the indoor air temperature sensor and

indoor relative humidity sensor to the termi-

nal strip at the bottom of the panel.

2. Program the high and low dewpoint setpoints

from the UC12PG-R controller’s front panel.

1.3. Sensor Mounting and Wiring

1.3.1. Mounting

The PMAC II Solo comes equipped with a wall-mount-

ed indoor temperature sensor (P/N 809-6580), and a wall-

mounted relative humidity sensor (P/N 203-5751).

1.3.1.1. Indoor Temperature Sensor

The indoor temperature sensor should be mounted in a

central location—within the zone to be measured—away

from doors, windows, vents, heaters, and outside walls that

could affect temperature readings. The sensor should be be-

tween four and six feet from the floor. In addition, the sen-

sor should not be mounted above other sensors that

generate heat during operation (such as relative humidity

sensors).

To mount the sensor, use a screwdriver to press in the

tab on the left side of the sensor enclosure, and lift the cover

off the enclosure. Use the two mounting holes on the back

panel to screw the sensor enclosure onto a flat surface (as

shown in Figure 1-5).

1.3.1.2. Indoor Relative Humidity Sensor

The indoor relative humidity (RH) sensor should be

mounted in a central location within the zone to be mea-

sured, away from doors, windows, vents, heaters, and out-

side walls that could affect humidity readings. The Sensor

should be between four and six feet from the floor. Note

that the RH sensor generates a small amount of heat; there-

fore, do not mount temperature sensors directly above RH

sensors.

Mount the RH sensor as follows:

Figure 1-3 - Typical Layout

Figure 1-4 - Typical Heater Wiring Layout

Figure 1-5 - Indoor Temperature Sensor Mounting

Sensor Mounting and Wiring Overview • 3

1. With a flat-head screwdriver, push down the

middle tab on the top of the sensor case and

pop the lid off to expose the circuit board.

2. Insert the flat-head screwdriver into the two

slots on either side of the top of the sensor

case and twist to separate the back plate from

the case.

3. Remove the knock-outs from the back plate

before mounting so wires may be threaded

through.

4. Mount the back plate to the wall using the

two open mounting holes on the top and bot-

tom of the plate.

5. Replace the cover on top of the back plate by

lining up the tabs, and snap the lid back into

place.

1.3.2. Wiring

The wall-mounted sensors must be connected to the ter-

minal strip at the bottom of the PMAC II Solo panel. The

necessary connections between this terminal strip and the

UC12PG-R controller are hard-wired by CPC during man-

ufacturing.

1.3.2.1. Wiring for RH Sensor

1.3.2.2. Sensor Cable Type

Wire the sensors to the PMAC II Solo terminal strip us-

ing Belden #8641 or equivalent for the temperature sensor,

and Belden #8771 or equivalent for the humidity sensor.

1.3.2.3. Wire Connections

Figure 1-9 shows how to connect the sensor cables to

the terminals on the sensor and the PMAC II Solo terminal

strip. Table 1-1 gives the wire colors for the Belden #8771

three-conductor cable and where they must be connected

on the sensor and the PMAC II Solo terminal strip. The

Figure 1-6 - Indoor RH Mounting Dimensions

NOTE: Before wiring connections are made

on the RH sensor, the output select switch

mustbe setto"VOLTS", andthe jumperset to

"5V" (five volts). See (Figure 1-7).

Figure 1-7 - Indoor RH Sensor Board

Figure 1-8 - Indoor RH Sensor Wiring

UC12PG-R Output Mapping Overview • 4

temperature sensor is two-wire, non-polarity specific. Re-

fer to Figure 1-9 for wiring to the PMAC II Solo strip.

1.4. UC12PG-R Output Mapping

Table 1-2 shows how the 28 channels of the PMAC II

Solo are connected to the four UC12PG-R outputs.

1.5. Programming the UC12PG-R

Controller on the PMAC II

Solo Panel

With the sensor properly configured, all that remains to

set up the PMAC II Solo for humidity control is specifying

the minimum and maximum dewpoint setpoints (Section

1.5.4., Entering/Changing Setpoints), as well as the mini-

mum pulse percentage (Section 1.5.4.3., Setting Pulse Per-

centages).

1.5.1. Keypad

The PMAC II Solo keypad allows the user to navigate

through all the status and configuration screens and to ad-

just setpoints. The keypad has a four-line display and six

buttons, and can display up to 20 characters on each line.

To exit a screen without saving or to cancel an opera-

tion, press the button. The button allows you to se-

lect, enter information, or save changes into the controller.

The buttons move the cursor and allow

you to change configuration parameters.

1.5.2. How the Setpoints Work

The PMAC II Solo uses these setpoint values as shown

in the graph in Figure 1-10. When the dewpoint is at or be-

low the Minimum Dewpoint setpoint, the heaters will op-

erate at the percentage specified in the Minimum Pulse

Percentage setpoint. When the dewpoint is between the

minimum and maximum setpoint, the PMAC II Solo’s

pulse percentage varies between the Minimum Pulse Per-

centage and 100% (the higher the dewpoint, the higher the

pulse percentage). Finally, if the dewpoint meets or ex-

ceeds the Maximum Dewpoint setpoint, the heaters will

operate at 100%.

1.5.3. Logging Into the UC12PG-R

All day-to-day user functions, such as viewing alarms

and status screens are performed after being logged into the

system. Viewing and changing any configuration parame-

ters, such as setpoints, minimum pulse times, date, time, or

password, requires the user to enter a six-digit password.

Figure 1-9 - Wiring the Temp & RH Sensor to the PMAC II Solo

RH Sensor

Wire Color

(Belden 8711)

Sensor Ter-

minal Name

PMAC II Solo

Terminal

Strip

Red PWR Humidity +12V

Black Common Humidity -

White RH Out Humidity +

Table 1-1 - Wire Colors & Connections for RH Sensor

UC12PG-R Outputs Anti-Sweat Channels

1 1 - 7

28 - 14

3 15 - 21

4 22 - 28

Table 1-2 - UC12PG-R Outputs to PMAC II Solo Channels

Temp

Sensor

Temp

Sensor

Humidity

+12V

Curtail

Clsd=or

Curtail

Clsd=or

Alarm NC

Ground

120VAC

Neutral

Exp B

Exp A

Exp B

12Vdc-

12Vdc+

12Vdc-

12Vdc+

% ON

0-5V +

0-5V -

Indoor Temp Sensor

Indoor RH Sensor

Black

White

8641 Cable

White

Black

Red

8771 Cable

P/N 203-5751

Figure 1-10 - Anti-Sweat Control Strategy for the PMAC II Solo

Table of contents

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