DVP-120 Installation & Operating Instructions
TABLE OF CONTENTS 1 INTRODUCTION ....................................................................................................................................... 5 1.1 General Information ........................................................................................................................... 5 1.2 Features .............................................................................................................................................. 5 1.
Figure 3-4 Normal System Display ..................................................................................................................... 17 Figure 3-5 Sensor prompt .................................................................................................................................... 17 Figure 3-6 Alarm display..................................................................................................................................... 17 Figure 3-7 Alarm Silenced message ..
LIST OF TABLES Table 2-1 Main Power Connections .................................................................................................................... 10 Table 2-2 Recommended Wire Gauge................................................................................................................. 10 Table 2-3 Connector to Sensor Channel Mapping...............................................................................................
1 INTRODUCTION 1.1 General Information The DVP-120 Gas Detection and Ventilation Control Panel is a microcomputer based control panel used to operate ventilation fans based on the inputs from remotely mounted gas transducers. The unit is fully tested prior to leaving the factory, and is ready for operation after the wiring is complete and the user system configuration is entered.
NOTE: 1. Power connections at the sensor are non-polarized. ENGINEER AND ARCHITECT SPECIFICATIONS Gas detection and exhaust fan control is provided by a Macurco DVP-120 system. This System will use CM-2B or CM-3 Carbon Monoxide (CO) to current transducers, ND-2 Nitrogen Dioxide to current transducers or GT11A Combustible Gas to current transducers. Each transducer will measure the level of the target gas and provide this information to the DVP-120 over a 4-to-20 mA current loop.
Figure 1-2 DVP-120 Internal View Revision 0.
1.4 Specifications1 – – – – – – – – – – – – – – – – 1.
2 Installation & Connection 2.1 Mounting the DVP-120 Mounting holes are provided in the DVP-120 case at the four corners. The top two are keyhole shaped so that the panel can be hung and then the two bottom screws driven to hold the panel. Conduit entry holes are provided on the top, bottom and right side of the panel. The panel should be mounted with sufficient space all around, depending on the complexity of the installation.
2.3 Main power Connection The main power cable should be routed into the bottom left conduit entry. Macurco recommends a minimum wire size of AWG18. The modular connector will accept wire from 12 to 24 AWG. The safety ground wire should be secured to the ground stud at the bottom left of the cabinet with the lock washer and nut supplied. Macurco recommends the use of a ring terminal for the ground connection. Refer to Table 2-1 for DVP-120 power connections.
Each 8-terminal sensor modular connector may be disconnected from the PCB connector to ease wire installation. The terminals will accept wire from 16 to 28 AWG. To install a wire, strip back approximately 0.25 in. (6 mm) of insulation, and insert the bare wire into the terminal. Tighten the screw clamp and ensure that the wire cannot be easily pulled from the connector. Table 2-3 lists the connector to sensor channel correspondence.
2.5 Relay Connection R3 C R3 NO R3 NC R2 C R2 NO R2 NC R1 C R1 NO R1 NC All poles of the three relays are available at the modular connector J2 (see Figure 2-2 for details). J2 is a 9position variant of the high voltage modular connector used for power input. Each terminal can accommodate a wire size 12 to 24 AWG. 9 1 Insert this face of connector into mating connector on control circuit board.
Horn & Strobe Connection 1 Horn + Horn - Strobe + The external horn and strobe connections are available at the modular connector J5 (see Figure 2-3 for details). J5 as a 4-position connector, similar to the sensor interface connectors. Strobe - 2.6 4 Insert this face of connector into mating connector on control circuit board. Figure 2-3 Horn & Strobe Connector To install the wiring for the horn or strobe, disconnect the connector from the header on the PCB.
2.7 Interfacing Macurco Sensors All Macurco CO, NO2 and combustible gas sensors with current loop outputs may be used with the DVP-120. Data sheets for the Macurco sensors listed in Table 2-8 are provided as an appendix to this manual. Power connections to Macurco sensors used with the DVP-120 are polarity-insensitive, since a bridge rectifier is connected to the power input terminals. All sensors used with the DVP-120 panel employ screw clamp terminal blocks for power and signal connections.
3 Operation 3.1 Initial Operating Mode When power is first applied to the DVP-120, a few simple tests will be performed, e.g. cycle through all status lights, and display the system name and model # (Figure 3-1). The system will then proceed to normal mode, if the operating parameters have been entered. DVP - 1 2 0 Ve r 1 . 0 1 Figure 3-1 Model Display If the user has not entered any parameters, the system WILL NOT be monitoring the sensors or controlling the ventilation system.
3.1.2 User Interface The LCD display is used to show detailed information about the status of the control system and the configuration parameters to the user. The keypad (Figure 3-3) is used to select the information displayed and to enter the configuration parameters, which are stored in the DVP-120 non-volatile memory.
3.1.3 Normal Status Display MO N S0 1 1 0 : 2 3 CO R1 5 OFF P PM Figure 3-4 Normal System Display The display shows the day of the week and the time of day, in 24-hour format. It also shows the status of one of the relays, R1 in this example, and the type and indicated gas concentration of one of the configured sensors, S01 is a CO sensor indicating 5 ppm in this example.
A L A RM S I L E N C E D F OR 5 M I NUT E S Figure 3-7 Alarm Silenced message If Relay 1 has be configured as an ALARM relay it will be turned on when an alarm condition is recognized and will be turned off when all audio indicators have been silenced. Silencing applies to the cause(s) of the alarm when the HUSH key is pressed. 3.1.
When the HUSH key is pressed, the internal buzzer will be silenced for eight (8) hours. If the horn or strobe turn on delays have not finished then they will also be silence. If the delays have finished, the HUSH key must be held for three (3) seconds in order to silence the horn and strobe. When all indicators have been silenced, the display will show that trouble indications have been silenced for eight hours. After five seconds (or any key press), the display will return to normal mode.
3.3 Setting the System Configuration The configuration menus can be entered from normal mode by pressing the MENU key. While in configuration mode, the user can review all configuration parameters to check the current operating conditions. As an aid when configuring the control panel, the first entry in the top menu summarizes the number of sensors and relays that the panel is currently recognizing.
3.3.1 System Menu The top menu level allows the user to select: – Configure System – Configure Sensors – Configure Relays, Horn & Strobe – Configure Zones – Configure Signals The up and down cursor keys can be used to scroll through the entries in the list, while the left or right key will enter the particular submenu. The MENU key will return to normal mode, at which time the changes are saved in non-volatile memory and become effective in controlling the ventilation system and for alarm level detection.
3.3.2.2 Set Day of Week T i me : Da y : 2 2 2 : 5 5 Tu e s d a y Figure 3-19 Set Day of the week This display example shows that Tuesday is the current day of the week. The underline character indicates that the day can be changed by entering the corresponding digit: – 1 Monday – 2 Tuesday – 3 Wednesday – 4 Thursday – 5 Friday – 6 Saturday – 7 Sunday 3.3.2.
3.3.2.4 Enter Password P a s swo r d * * * * Figure 3-21 Enter Password ? This display shows that the password is 4 digits long. When the first digit is entered, the panel will show. P a s swo r d _ _ _ 1 Figure 3-22 Password Prompt ? If the password is not entered correctly the panel will display Wr o n g P a s swo r d Figure 3-23 Wrong Password Prompt ? Once the current password has been entered, the panel will prompt for the configuration parameter being changed. Revision 0.
3.3.3 Configure Sensors Submenu There is a list of parameters for each sensor in the system, either currently wired or configured but presently disconnected. The left and right cursor keys can be used to move from one sensor to another; doing so always goes to the first display (summary). The up and down keys will scroll through the parameters for the particular sensor. 3.3.3.
3.3.3.4 Warning Set Point Se n s o r 0 1 CO Wa r n i n g : _ _ 5 0 p p m Figure 3-27 Sensor’s Warning Level The default warning levels for the sensors are: – Carbon Monoxide 50 ppm – Nitrogen Dioxide 3.0 ppm – Combustible 2,000 ppm (5% LEL for methane) Setting a warning level of 0 (zero) will disable warning detection for this particular sensor. 3.3.3.
3.3.4 Configure Relays, Horn & Strobe Submenu There is a list of parameters for each relay in the system. The left and right cursor keys can be used to move from one relay, horn or strobe to another. Doing so always goes to the first (summary) display. The up and down keys will scroll through the parameters for the particular relay, horn or strobe. 3.3.4.1 Relay Summary Re l a y De l a y 1 No rm . Of f On ,Mi n .
3.3.5 Configure Horn Submenu The configuration parameters for the horn are the same as those for relays. A horn would not normally require a minimum on time but this parameter allows a more versatile configuration. 3.3.5.1 Horn Summary Ho r n 4 No rm . Of f De l a y On Figure 3-33 Horn Summary This display example shows that the horn has been configured to operate Normally Off, with a turn on delay and no minimum on time. Notice that the horn number, 4, is underlined.
3.3.6 Configure Strobe Submenu The configuration parameters for the strobe are the same as those for relays. A strobe would not normally require a minimum on time but this parameter allows a more versatile configuration. 3.3.6.1 Strobe Summary S t r o b e 5 No rm . Of f De l a y On Figure 3-37 Strobe Summary This display example shows that the strobe has been configured to operate Normally Off, with a turn on delay and no minimum on time. Notice that the strobe number, 5, is underlined.
3.3.7 Configure Zones Submenu The DVP-120 ventilation control can support up to three zones. The zone functionality makes the DVP-120 very flexible. For example, each zone can be configured to monitor a separate set of 4 sensors and control a single relay. Another control scheme uses one zone to monitor all sensors and turn one relay on at a relatively low gas concentration. A second zone monitors the same sensors and turns on a second relay if the gas concentration reaches a higher level.
3.3.7.3 Timed Day Selection Z1 G r o u p 1 T i me d Da y s : 1 We e k d a y s Figure 3-43 Timer Days Selection Valid entries are: – – 1 Weekdays, Monday thru Friday, (default) 2 Weekends, Saturday and Sunday 3.3.7.4 Start Time Z1 G r o u p 1 T i me d S t a r t T i me : 0 7 : 0 0 Figure 3-44 Start Time Selection The start time is entered in 24-hour format and the default value is 07:00 (7:00 AM). 3.3.7.
3.3.7.7 Rising Trip Point Z1 Gr o u p R i s i n g : 1 NO 2 2 . 5 p pm Figure 3-48 Rising Trip Point Entry The default rising trip points are: – Carbon Monoxide 100 ppm – Nitrogen Dioxide 2.5 ppm – Combustible 2,000 ppm 3.3.7.8 Falling Trip Point Z1 Gr o u p Fa l l i n g : 1 NO 2 1 . 0 p pm Figure 3-49 Falling Trip Point Entry The default falling trip points are: – Carbon Monoxide 50 ppm – Nitrogen Dioxide 1.2 ppm – Combustible 1,000 ppm 3.3.7.
3.3.8 Configure Signals Submenu The DVP-120 can drive the buzzer, horn and strobe with different sound patterns to indicate the severity of the current conditions. These patterns are selectable by the installer using this group of submenus. Once again, the left and right keys will scroll through the signal types and the up and down keys will scroll to the signal sources. 3.3.8.
3.3.8.4 Alarm Strobe Signal Al a rm S i g n a l s S t r o b e : 1 Co n t i n . Figure 3-55 Strobe Alarm Signal This display example shows that the strobe will signal an alarm condition with a continuous signal. The signal definitions are: – 1 Continuous (default) – 2 Intermittent, one second on at two second intervals – 3 Double Tap, two beeps at 5 second intervals – 4 Triple Tap, three short beeps at 15 second intervals – 5 Off, strobe will not flash 3.3.8.
S t r o b e : 5 OFF Figure 3-59 Strobe Warning Signal This display example shows that the strobe will not signal a warning condition. The signal definitions are: – 1 Continuous – 2 Intermittent, one second on at two second intervals – 3 Double Tap, two beeps at 5 second intervals – 4 Triple Tap, three short beeps at 15 second intervals – 5 Off, strobe will not flash (default) 3.3.8.
3.3.8.12 Trouble Strobe Signal T r o u b l e S i g n a l s S t r o b e : 5 OFF Figure 3-63 Strobe Trouble Signal This display example shows that the strobe will not signal a trouble condition. The signal definitions are: – 1 Continuous – 2 Intermittent, one second on at two second intervals – 3 Double Tap, two beeps at 5 second intervals – 4 Triple Tap, three short beeps at 15 second intervals – 5 Off, strobe will not flash (default) Revision 0.
4 Troubleshooting The DVP-120 is extensively tested at the factory to ensure reliable operation. Most problems can be traced to the set-up of configurable features and modes, system wiring or trouble with the sensors. 4.1 System Status Light Flashing The system status light (section 3.1.1) is normally green indicating power is present, but will change to yellow whenever the controlling firmware detects a trouble condition.
4.3 No Power WARNING 120/240 VAC terminals are located within the DVP-120, presenting a hazard to service technicians. Only qualified technicians should open the DVP-120 case and service the internal circuits. Ensure power is removed from the DVP-120 prior to servicing the unit. The DVP-120 starts up as soon as power is applied to the microcontroller, and the DVP-120 is designed to have power continuously applied to the unit.
