Table of Contents 1 ABOUT THIS GUIDE... 3 1.1 CONTACT INFORMATION... 3 2 ANTENNA INSTALLATION... 4 2.1 GENERAL INFORMATION... 4 2.2 SPECIFIC MOUNTING EXAMPLES... 5 2.3 CONNECTOR MOISTURE PROTECTION... 7 3 INPUT AND OUTPUT CONNECTIONS... 8 3.1 AC POWER CONNECTIONS... 8 3.2 CONNECTOR LAYOUT... 9 3.3 DISCRETE INPUTS... 10 3.4 ANALOG INPUTS... 14 3.5 DISCRETE OUTPUTS... 19 4 STATUS LED... 21 Page 2 of 31 v1.4
1 About this guide This document is intended to be used as an installation guide for the HTT-900, HTT-1100, HTT2100, and HTT3100. Not all features discussed are available on all models. Below is a summary: HTT-2100 has all covered features HTT-1100 does not have Discrete Output Functionality HTT-900 is equivalent to the HTT1100 however it does not have any analog inputs. There is an section in the back to cover the unique features of the HTT-3100 1.1 Contact Information If you need help with an installation you may contact your distributor or call High Tide Technologies directly at 877-488-4882. V1.4 Page 3 of 31
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2 Antenna Installation 2.1 General Information When installing the antenna, the installer should understand some basic information about how the satellite telemetry works. There are over 30 satellites in the constellation that are orbiting the earth once every 90 minutes. Due to the rotation of the earth only some of the satellites can be seen at any time and they will always be moving through the sky. Also, as the satellites move across the sky most of the time they will be below a line drawn at 30% above the horizon. Because of this it is important that the antenna be placed so that it can see as much of the horizon in all directions as possible. Since the satellites are all moving the distance between the installation and the satellite varies quite a bit. This also causes the signal strength to vary as received by the satellite and when V1.4 Page 5 of 31
transmitting back to the satellite. The performance of a particular installation is measured by its ability to transmit and receive quickly no mater where the satellites are at that moment. Therefore, the installer should attempt to make the installation as optimal as possible at that site even if the signal appears to be very strong at that moment. 2.2 Specific Mounting Examples 2.2.1 Buildings If it is mounted on a building it should be placed so that the base of the antenna is above the highest point of the structure so that the structure does not block the antenna s view of the sky. Warning: If the building has a metal roof the antenna mount should be electrically isolated from the roof. A wood 2X4 mounted to the side of the building works well. If there is another building located near the mounting locations it may be necessary to raise the antenna so that it can see the horizon over the adjacent building. Page 6 of 31 v1.4
2.2.2 Trees The satellite signal can transmit through trees if they are not too dense, but if there is heavy forest in one direction or another it is good to raise the antenna as high as possible sit it can see over the trees. 2.2.3 Tanks In general mounting the antenna on to of the storage tank works the best. This may require antenna cables longer than the factory default length of 25ft. Standard cables are available in lengths of 50ft, 75ft, and 100ft, however longer cables can be special ordered. Warning: When the antenna is mounted on top of a tank it is strongly recommended that a lightning arrestor be installed between the antenna and the HTT unit. Approved arrestors are available from High Tide Technologies. It mounting on top of the tank is not practical there are some installation guidelines that will improve the performance. For ground storage tanks, it is recommended that the antenna be mounted as high as possible (possibly on top of a 20ft fiberglass V1.4 Page 7 of 31
pole). To get the best performance it is also recommended that the antenna be mounted at least one tank diameter away from the tank between due north and due east of the tank. This will reduce the amount of time the tank will block the antenna from seeing the moving satellites. For Elevated tanks it is OK to mount the antenna underneath the tank, but it should be near the edges or slightly outside the diameter of the bowl to avoid blockage by the fill drain column. 2.2.4 Telephone or Metal Poles If you are mounting the antenna part way up the side of a telephone pole it is recommended that the antenna be at least three feet away from the pole itself. Mounting a piece of Unistrut to the pole horizontally, then mounting the antenna to the end of the Unistrut section works well. 2.2.5 Other Antennas If there are other antennas near by then the HTT antenna should be mounted as far away as possible. It the two antennas have to be mounted on the same pole it is recommended that the HTT antenna be mounted either above or below the other antenna rather than at the same level. Page 8 of 31 v1.4
2.3 Connector Moisture Protection After all the antenna cable connections have been screwed on tightly the connections should be protected from moisture. Self-vulcanizing tape should be used to seal the connections at both the antenna end and where the antenna cable connects to the HTT unit. V1.4 Page 9 of 31
3 Input and Output Connections 3.1 AC Power Connections Figure 1 shows the AC power input terminals. GREEN is for earth ground, WHITE is for neutral and BLACK is for line voltage. If required local circuit protections should be provided outside the High Tide enclosure. If AC surge arrestors are ordered with the unit they will be installed at the factory Page 10 of 31 v1.4
Figure 1 AC Power Connections 3.2 Connector Layout Figure 2 shows all the I/O and power connection on the HTT-1100 family of Remote Terminal Units (RTU). Figure 2 Terminal Layout V1.4 Page 11 of 31
The silkscreen on the board labels what the function of each connector which are described briefly below: VDC Main input power. Must be between 9 and 15V to function properly. Reverse connections and voltages greater than 15V can cause damage to the system. Discrete Inputs The maximum input for these terminals is 30VDC. Section 3.2 describe the various way to use them. Discrete Output (Optional) These outputs are opencollector current sync only outputs intended to drive relay coils. The maximum current draw is 50ma per output. Power This connector provides a convenient ground connection and fused 24VDC supply. The maximum current for this terminal is 100ma. Analog Inputs The analog inputs may be configured as either 4-20ma or 0-5V inputs by installing or Page 12 of 31 v1.4
removing the sense resistors R32-R35. Fused 24VDC and Ground terminals are provided for convenient wiring to power the transducers. Serial Port (Optional) J8 provides an RS-232 serial port typically used to connect to an external PLC. 3.3 Discrete Inputs The HTT-2100 and HTT-1100 are equipped with eight discrete inputs. These inputs can be configured in several different ways. All discrete inputs are optically isolated and can be configured via jumpers JP1 and JP2 as either syncing or sourcing. JP1 controls DI-0 thru DI-3 and JP2 controls DI-4 thru DI-7. The location of the Jumpers is shown in Figure 3. V1.4 Page 13 of 31
Figure 3 Discrete Input Jumpers When JP1 or JP2 are in the 1-2 position then a ground connection to the input will be active. When JP1 or JP2 is in the 2-3 position, then a positive input voltage will be active. The power connector can be used to provide the reference ground. In addition to the eight discrete inputs all four analog input can be used as discrete alarm inputs, however they are not optically isolated. The use of analog inputs as discrete alarms is discussed in the Analog input section. Page 14 of 31 v1.4
Below are some examples of how to connect discrete inputs to the RTU 3.3.1 Dry Contacts and Open Collectors Figure 4 shows a typical dry contact installation. The blue wire would be connected to one side of the dry contact or the opendrain. The black wire would be connected to the other side of the contact or to the ground of the open-drain. If there are multiple contacts at one location then the ground from the power connector can be used as a common then the other side of the contact should be wired to the discrete input. Jumper JP1 and/or JP2 should be in the 1-2 position. Open-collector or open-drain sources should be connected the same way with a common ground between the source and the HTT unit. V1.4 Page 15 of 31
Figure 4 Dry Contact and Open Drain Connections 3.3.2 Active Voltage Sources Active voltage inputs are connected the same way as the dry contacts above, with the black wire connected to the common ground and the blue wire connected to the active source, however JP1 and/or JP2 must be in the 2-3 position for this input mode. Warning: Page 16 of 31 The maximum Discrete input voltage is 30VDC. v1.4
3.3.3 Counter Inputs DI-4 thru DI-7 can be used as pulse counter inputs. These typically come from flow meters. The inputs can be configured as either Dry Contacts or Active Voltage sources as described earlier. 3.4 Analog Inputs The HTT-2100 and HTT-1100 are equipped with four analog inputs. These inputs can be configured as: 0-5V inputs 0-20ma or 4-20ma inputs Discrete alarm inputs. The connections for each of these are discussed below. 3.4.1 Current Inputs (0-20ma or 4-20ma) When connecting to sensors with current outputs the 3-Watt sense resistor must be installed. These are R32 thru R35 which correspond to AI-0, AI-1, AI-2, and AI-3. These are the large, vertically mounted resistors behind the analog input connectors. The resistor connected to the board via pin sockets so they are V1.4 Page 17 of 31
easy to remove and insert. The factory default is current mode with the resistors installed. These inputs can be configured on the HTT server for either 0-20ma or 4-20ma loop sources. There are three types of analog output styles. The connections for each of these are covered below. All examples are show using input AI-0 3.4.1.1 Two-wire current inputs Two-wire current inputs are the most common. With these sensors the power for the sensor is pulled from the loop current itself. The HTT-2100/1100 analog input connector provides a fused 24V output to supply power to the sensor then the return wires is connected to the selected analog input terminal. This is illustrated in Figure 5. The RED wire is the 24V loop power source and the Black wire is the return from the sensor. Page 18 of 31 v1.4
Figure 5 2-Wire Analog Sensor 3.4.1.2 Three-wire current inputs With three-wire current inputs the HTT-2100/1100 still provides the sensor power, however a reference ground is also provided. This type of connection is typically used for sensors that need more than the minimum 4ma to power the sensor. By separating the power from the analog input the sensor can draw more power, but still limit the output to 20ma. This is illustrated in Figure 6. The V1.4 Page 19 of 31
RED wire is the 24V power, BLACK wire is the ground and the YELLOW wire is the analog input value. Figure 6 3-Wire Analog Sensor 3.4.1.3 Self powered Current inputs There is a class of current sources that are self powered. For these all that is required is a ground reference and the analog input. Figure 7 shows how to connect this type of analog inputs. The black wire is a reference ground and the yellow wire is the output from the sensor. Page 20 of 31 v1.4
Figure 7 Self Powered and Voltage Sensors 3.4.2 Voltage inputs (0-5V) The analog inputs can be used with sensor that produce voltage outputs between 0.0 and 5.0V The input is tolerant of voltage levels up to 30V but will not report anything greater than 5 volts. Warning: When using the analog inputs to sense voltage sources the appropriate 3-W sense resistors, R32 thru R35, must be removed. V1.4 Page 21 of 31
Sensors with other voltage ranges can be used such as 0.0 to 1.0V or 0.5 to 4.5V but there may be some lost resolution. If the sensor uses 24 volts as its power then the HTT unit can still provide power but for sensors requiring other voltage sources, then inputs will require either an external regulator or power supply. If the sensor is self powered then the HTT power source is not required. The hook up for voltage output sensors is usually similar to the self powered analog sensor shown above in Figure 6. 3.4.3 Using Analog inputs as Discrete Alarms Though the analog inputs are not optically isolated they can be used as discrete alarm inputs. As discrete inputs they are designated DI-8 thru DI-11. They can be used as either Dry contract inputs by using the HTT 24V source as the loop power and connecting the other side of the contact to the analog input. Active voltage sources can also be used by connecting a common ground reference then connecting the active voltage to the analog input terminal. Page 22 of 31 v1.4
Warning: When using the analog inputs as discrete alarms the appropriate 3-Watt sensor resistor, R32 thru R35 must be removed. 3.5 Discrete Outputs The HTT-2100 is equipped with four discrete outputs that can be used to turn on and off local equipment. The HTT-2100 provided discrete outputs are designed to sync current through relay coils. When the discrete output is active it shorts the output to ground via an NPN transistor. The output can be used with either 12VDC or 24VDC coil relays. The HTT unit provides a fused 24V output that can be used to power the coils for this application. Figure 8 shows the typical relay connection diagram. RED wire would connect to the positive side of a 24VDC relay coil and the BLUE wire would be the return. V1.4 Page 23 of 31
Figure 8 Discrete Output Connections Warning: The maximum current that the discrete output can sink is 50 milli-amps. The HTT2100 comes with a bank of four dry contact SPST output relays prewired to the HTT2100 discrete outputs. These are usually sufficient to control pump starters or valve solenoids. Page 24 of 31 v1.4
3.6 HTT-3100 Extras The HTT-3100 uses the same modem and I/O board as the HTT2100. It is also equipped with several extra inputs and outputs. These include 20 extra discrete inputs, four extra discrete outputs, two extra analog inputs and two analog outputs. All the inputs except the four extra digital outputs are connected using the terminal on the two terminal strips shown in Figure 9. The use of each type is discribed below. Figure 9 HTT-3100 Expansion Connections V1.4 Page 25 of 31
3.6.1 Extra Discrete Inputs The extra discrete inputs can only be used with dry contact sources. One side of the dry contact is connected the the BLACK 'COM' terminal and the other to to the input on the appropreiate input on the terminal block. Expansion discrete inputs are numbered 1 thru 20. 1 thru 16 are on the first block and 17-20 are on the bottom of the second block. 3.6.2 Extra Discrete Outputs The four extra discrete outputs are prewired to a second set of dry contact relays the same at the 2100. This gives the installer a total of eight dry contact relay outputs for controlling pumps and valves. 3.6.3 Extra Analog Inputs Unlike the analog input standard in the HTT1100 and HTT2100 the two extra analog inputs in the HTT3100 can only be wired for 4-20ma sources. For a two-wire loop powered 4-20ma sensor the power it connected to the RED '+' terminal and the return from the sensor is conneced to AI-4 or AI-5 on the second expanssion terminal stip. For two-wire self powered sources connect the ground(com) to the ground of the source and the analog output of the source to the AI-4 or AI-5. Page 26 of 31 v1.4
For three-wire sensors connect the RED '+' terminal to the power input on the sensor. The Ground 'COM' terminal to the ground and the analog output from the sensor to either AI-4 or AI-5. 3.6.4 Analog Outputs There are two analog outputs provided by the HTT3100. These are typically used for speed control on VFD controllers. The outputs are 4-20ma only and are current syncing only type. If the input you are driving is not isolated then you may need an external isolator. When wiring the RED '+' terminal should be run to the (+) of the VFD or PLC and the AO-0 or AO-1 terminal should be connected to the (-) of the VFD or PLC. V1.4 Page 27 of 31
4 Status LED The LED in the middle of the modem is used to indicate the status of the modem and the satellite connection. The LED is illuminated as Red, Green or Amber, and can be either blinking or solid. Below is a list of all the modes and their meaning.. Slow blinking Red Processor is initiating communications with the Modem. Fast blinking Red Processor failed to talk to the modem. Slow blinking (Green or Amber) Modem is searching for a satellite. Solid Color (Green or Amber) Modem is locked on to a satellite. Green (Solid or Blinking) No message waiting to transmit. Page 28 of 31 v1.4
Amber (Solid or Blinking) There is a message waiting to transmit.status LED V1.4 Page 29 of 31
5 Typical Installations Below is a wiring diagram of a typical Duplex Lift Station. Page 30 of 31 v1.4
Below is the wiring diagram of a typical Tank Monitor. Below is a wiring diagram of a typical Dual Pump Booster Station V1.4 Page 31 of 31