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8 • PMAC

I&O Manual

026-1501 Rev

Alarm Configuration

This section explains the alarm capabilities of the

PMAC II and how to set up alarm annunciation and/or re-

porting using the panel’s ALARM output contacts.

3.1.

The Alarm Contacts on the
PMAC II Terminal Strip

The terminal strip at the bottom the PMAC II interior

has two terminals labeled ALARM, which are Normally

Closed, and which OPEN whenever certain abnormal sys-

tem conditions occur.

3.1.1. Connecting the Alarm Contacts to

an Input Board

You may wish to connect the digital ALARM output

from the PMAC II panel to a digital input on a

n Emerson

16AI

board

or other input device, so that the status of the

PMAC II can be monitored by the central site controller.

Refer to your site controller’s user manual for

information on how to do this. Set up the ALARM output

as a standard digital sensor that is OPEN during alarm

conditions and CLOSED when the system is functioning

normally.

If the ALARM contacts are connected to a point on a

16AI or other input board, you may configure the controller

to generate an alarm or perform some other control func-

tion to respond to this alarm condition. Refer to the control-

ler’s user manual for information on how to do this.

3.2.

Panel Overheat Alarming (All
Models)

The PMAC II has a feature that prevents equipment

damage as a result of overheating. When the temperature

inside the panel rises above the warning level (165°F), the

normally closed alarm contact will open. If the temperature
continues to rise and exceeds 180°F, the anti-sweat chan-

nels will be shut down.

3.2.1. Overheat Warning

The "warning level" for the PMAC II panel is 165°F. If

a panel interior temperature above 165°F is reached during
operation, a sensor located on one of the upper heat sinks

will open. In a standard PMAC II panel, this will cause the

ALARM contacts on the terminal strip to be set to OPEN.

3.2.2. Panel Overheat Shutdown

If, after the warning level is reached, the temperature

continues to rise above 180°F, another thermal sensor will

open and the unit will completely shut down. The unit will
remain shut down until the temperature returns to a normal

level.

Содержание 851-1000

Страница 1: ...Pulse Modulating Anti Sweat Control PMAC II Installation and Operation Manual 026 1501 Rev 6 ...

Страница 2: ...A Phone 770 425 2724 Fax 770 425 9319 Please Note This manual covers the PMAC II P N 851 1000 family of anti sweat panels Information on the PMAC II Solo P N 851 1100 anti sweat controller is contained in P N 026 1503 PMAC II Solo Installation and Operation Manual ...

Страница 3: ...ALARMING ALL MODELS 8 3 2 1 Overheat Warning 8 3 2 2 Panel Overheat Shutdown 8 4 CONFIGURING RMCC BEC EINSTEIN AND E2 9 4 1 BEC AND RMCC PAGE LAYOUT 9 4 2 PROGRAMMING THE BEC 9 4 2 1 Input Definitions 9 4 2 2 Output Definitions 9 4 2 3 Dewpoint Humidity Offsets 9 4 2 4 Outputs Setup 9 4 2 5 Setpoints 10 4 3 PROGRAMMING THE RMCC 10 4 3 1 Input Definitions 10 4 3 2 Output Definitions 10 4 3 3 Dewpoi...

Страница 4: ...may have 16 20 or 28 heater channels available Each channel supports a load of up to 16 amps The PMAC II relies on a site controller to control anti sweat heater ON percentage based on the in store dew point The PMAC II panel is compatible with the Building Environmental Control BEC Refrigeration Monitor and Case Control RMCC and Einstein RX or BX or an E2 site controllers The RMCC is capable of c...

Страница 5: ...air flow The room s ambient temperature should always be below 100 F Figure 2 1 and Figure 2 2 have the mounting dimensions 2 Provide 120 VAC 15 amp circuit to the PMAC II panel through a store circuit break er See the layout design in Figure 2 3 3 Provide power to the case heaters from the store circuit breaker panel through the PMAC II panel terminal strip using 10 12 AWG wire as shown in Figure...

Страница 6: ...ity must be respected while mak ing these connections 2 1 1 1 Single Channel Expansion Ports The 20 Channel PMAC has two expansion ports Fig ure 2 6 and the 28 Channel PMAC has six single expan sion ports Figure 2 7 These expansion ports can be used to attach single channel PMACs if desired P N 851 1010 NOTE When running power to the case heat ers include the neutral lead in the same con duit as t...

Страница 7: ...rovide continuous voltage to the case heaters during network com munication loss The fail safe dip switches should always remain in the UP position to ensure voltage is always pro vided to the case heaters If the switches are set in the DOWN position no voltage will be sent to the heaters dur ing network communication loss 2 2 3 Network Jumpers The network jumpers JU1 JU2 and JU3 define whether th...

Страница 8: ...24VAC center tap ground from the PMAC II transformer and converts it to 12VDC to drive the PMAC II relays Network Connection RS 485 Network communication is provided through the network communication connection as shown in Fig ure 2 8 Table 2 1 and described in the Location and Wir ing sections of this manual ...

Страница 9: ... connected to a point on a 16AI or other input board you may configure the controller to generate an alarm or perform some other control func tion to respond to this alarm condition Refer to the control ler s user manual for information on how to do this 3 2 Panel Overheat Alarming All Models The PMAC II has a feature that prevents equipment damage as a result of overheating When the temperature i...

Страница 10: ... for the anti sweat humidity and temperature sensors Use the down arrow keys to locate the following inputs ASC HUM1 ASC TEMP 1 ASC HUM2 ASC TEMP 2 and the anti sweat override inputs ASC 1 OVRD ASC 8 OVRD Refer to P N 026 1103 Building Environmental Control I O Manual Section 6 10 1 Input Definition for more information 4 2 2 Output Definitions From the Main Menu press 7 2 to access the Out put De...

Страница 11: ...circuit s heaters will remain ON at all times Between these dew point values the anti sweat circuit will pulse ON and OFF for a percentage of the time interval defined in the Outputs Setup screen Percent On During All OFF 0 30 0 By default anti sweat circuits operate at 0 when the dewpoint is below the Dewpoint All OFF setpoint If de sired a higher value for All OFF may be specified Percent On Dur...

Страница 12: ... re main OFF at all times The Dewpoint All ON setpoint is the maximum dewpoint above which the anti sweat circuit s heaters will remain ON at all times Between these dew point values the anti sweat circuit will pulse ON and OFF for a percentage of the time interval defined in the Outputs Setup screen Percent On During All OFF 0 30 0 By default anti sweat circuits operate at 0 when the dewpoint is ...

Страница 13: ...g in to the Einstein 2 Press Actions from the Main Status screen 3 Press Control Appl Setup 4 Press Add Control Application 5 Press Look Up and press the DOWN AR ROW key until Anti Sweat is highlighted 6 Press 7 Press the DOWN AR ROW key and enter the desired number of appli cations in the How many field 8 Press to add the Anti Sweat applications 1 Log in to the E2 2 Press I 3 Press Add Delete App...

Страница 14: ...values that will corre spond to the maximum and minimum ON percentages in the FULL ON DEWPOINT and FULL OFF DEWPOINT fields 2 If you wish to limit the minimum and maxi mum output percentages enter the desired limits in the Min Output and Max Output Einstein E2 1 From the Home screen press to select Anti Sweat 2 If you have created more than one application you will be asked to select an applicatio...

Страница 15: ...en 4 Outputs 1 In the OUTPUT field enter the point on the 8DO board located in the PMAC II that cor responds to the anti sweat channels you wish to control See Table 4 1 Table 4 2 and Ta ble 4 3 to see which point controls which channels Figure 4 6 Anti Sweat Inputs Setup Screen Figure 4 7 Anti Sweat Outputs Setup Screen 8DO Points for 16 Channel Anti Sweat Channel Circuits 1 7 8 2 5 6 3 3 4 4 1 2...

Страница 16: ...onal point on the 8DO board you want to control from this application 2b Highlight each output and change the defini tion style to Board Point for E2 press C for Einstein press 2c Enter the board and point number of the 8DO point 2d Continue until all outputs are defined 3 Press H to return to the Home screen For Einstein press HOME to return to the main status screen Setup of the anti sweat appli...

Страница 17: ...t Parts Replacement Parts Fan 120V 120CFM 147 0300 Heat Sink Assembly w Triacs 610 3150 Opto Board Solo 16 and 28 Channel 537 3051 Interface Board 537 3069 8DO Board 810 3050 Opto Board 20 Channel 537 3055 Table 5 1 Replacement Parts and Part Numbers ...

Страница 18: ... Climate Technologies Retail Solutions Inc and or its affiliates collectively Emerson reserves the right to modify the designs or specifications of such products at any time without notice Emerson does not assume responsibility for the selection use or maintenance of any product Responsibility for proper selection use and maintenance of any product remains solely with the purchaser and end user 02...

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