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an SX1120-RT, connected to an SEQ, should turn on last and off first, the menu items shown
below should be programmed as follows:

Delay C On

5*

Delay C Off

5*

Aux Sync

C

Aux Delay On

10*

Aux Delay Off

0

*These delay times are an example. Set actual times as required for each application.

In the above example, the turn-on delay for bank C is 5 seconds and the turn-on delay for the
SX1120-RT is 10 seconds. Because the aux sync is set to bank C, the same internal trigger is
used to start both time delays. What then happens is that after bank B turns on, there is a 5
second delay before bank C turns on, then there is further 5 second delay before the SX1120-RT
turns on (the 10 second timer started at the same time as the 5 second timer for bank C). When it
is time to power down, the SX1120-RT turns off immediately (the delay is set to zero), then 5
seconds later bank C turns off.

In another example, if the SX1120-RT should turn on first and off last, the programming would
be as follows:

Delay A On

5*

Delay A Off

5*

Aux Sync

A

Aux Delay On

0

Aux Delay Off

10*

*These delay times are an example. Set actual times as required for each application.

As can be seen in the above two examples, by choosing the appropriate sync setting and delay
times it is possible to position the 4

th

 bank anywhere in the sequence.

If an over-ride is used with an expanded system do not use the Special Delay as the 4

th

 bank may

not turn on and off in the correct sequence during an over-ride condition.

6.4

 

Ganged System

A ganged system consists of two or more SEQs connected together in such a way that they all
turn off and on together. Figure 4 shows how to connect and program each unit in a three-unit
system. If only two units are to be ganged together then ignore the middle unit in the diagram. If
more than three units are to be ganged together then keep the first and last units set up as shown,

Summary of Contents for SX2120-SEQ

Page 1: ...SX2120 SEQ USER MANUAL Software Version 1 1 Three Bank Sequencer With Power Conditioning Surge Protection...

Page 2: ...CONTROL 10 5 2 OVER RIDE CONTROL 10 5 3 12V DC OUTPUT 11 5 4 AUXILIARY RELAY 11 5 5 FRONT PANEL PUSH BUTTON 12 5 6 OUT OF RANGE AC VOLTAGE SHUT DOWN 12 5 7 SELF TEST FAILURE SHUT DOWN 12 5 8 RESTORE F...

Page 3: ...3 7 TROUBLESHOOTING 24 8 ERROR CODES 25 9 SPECIFICATIONS 26...

Page 4: ...ve the button indicates the status of the unit When the red LED is off the unit is fully powered down when it is on the unit is fully powered up when it is flashing the unit is in the process of power...

Page 5: ...plugging the cord into a 120V ac 20 amp receptacle The SEQ cannot be plugged into a 15 amp receptacle If a 120V 20 amp branch circuit is not available you will need to have one installed by a license...

Page 6: ...e wire to the up input and the ground or negative wire to common Program the input for 5 30 V dc b Contact Closure The SEQ will power up when the contacts are closed and power down when the contacts a...

Page 7: ...n one LED is required then use a separate series resistor for each LED In this example four external LEDs could be powered at 10mA each from one SEQ If more than four LEDs are required it will be nece...

Page 8: ...is section is intended to allow users with a simple straightforward system incorporating a single SX2120 SEQ to get up and running with the minimum of effort If this is not the case then skip this ent...

Page 9: ...cer and has 21 menu items that control its operation Some menu items allow predetermined options to be selected and others allow time delays or voltage limits to be adjusted All adjustments are made v...

Page 10: ...C powering off 5 2 Over Ride Control The SX2120 SEQ has an optional over ride and there are four menu items that control this function If you do not require an over ride you can skip the next four me...

Page 11: ...t The aux relay can be used to provide feedback to a central controller to control another power distribution product or for controlling another SEQ when two or more are ganged or cascaded together Pl...

Page 12: ...Fr Panel Button Select Enable for normal operation Delay to operate only after a one second delay and Disable to prevent operation from the front panel 5 6 Out of Range AC Voltage Shut Down The SX212...

Page 13: ...uthorized access to the programming mode From one to six letters A through Z can be used as a password It is important to remember the password because once it has been set you cannot get into the pro...

Page 14: ...ted in parallel so that the SEQ can be controlled from multiple locations A single push switch would cause the unit to power up on the first press and then power down on the second press A dual moment...

Page 15: ...that can be used for fire safety and other applications where the power must be held on or forced off The over ride function is programmable so that it can be set to either force the unit off or forc...

Page 16: ...ost of the information necessary to install and set up a single unit system can be found in sections 3 2 and 6 1 Figure 1 shows a single unit system controlled by momentary switches at three different...

Page 17: ...then 5 seconds later bank C turns off In another example if the SX1120 RT should turn on first and off last the programming would be as follows Delay A On 5 Delay A Off 5 Aux Sync A Aux Delay On 0 Aux...

Page 18: ...unit as well as control from each unit to the next unit The 12V dc output terminal 4 is used as the feedback source and the over ride input terminal 3 is used as the feedback input Figure 5 shows how...

Page 19: ...SEQ Single Unit System Controlled by Momentary Switches Location 3 Location 2 Location 1 Mixer Signal Processing Amplifier Use an LED and 1K W resistor at each location Program Up Down Inputs One Mom...

Page 20: ...5 6 7 SX2120 SEQ Mixer Signal Processing Amplifier Single Unit System Controlled by Central Controller Program Up Down Inputs Latching Aux Sync Confirm Confirmation Feedback Controller Low Voltage Con...

Page 21: ...5 6 7 SX2120 SEQ A On Switched 1 2 3 4 5 6 7 SX1120 RT LED and 1K 1 4W Resistor Confirmation If Required Program Up Down Inputs One Mom 12v dc Output LED Aux Sync A B or C Aux Delay On Set as Needed...

Page 22: ...1 2 3 4 5 6 7 SX2120 SEQ A ON C B A 1 2 3 4 5 6 7 SX2120 SEQ Program Up Down Inputs One Mom 12V dc Output LED Aux Sync Gang Confirmation If Required Program Up Down Inputs Latching Aux Sync Gang Progr...

Page 23: ...n If Required LED and 1K 1 4W Resistor Program Up Down Inputs One Mom Over Ride Input 5 30 Vdc Over Ride Func Master 12V dc Output LED Aux Sync Cascade Program Up Down Inputs Latching Over Ride Input...

Page 24: ...ion If you have performed initial checks as above and the unit will still not power up it could be because the down input terminal 2 is being held active all the time Remove the terminal block from th...

Page 25: ...05 The calibration of the AC voltmeter is no longer accurate The unit is otherwise fully operational Call the factory for assistance Error 15 There is a checksum error in the non volatile memory This...

Page 26: ...ad 3dB 5KHz 26dB 100KHz 38 dB 300KHz 50dB 5MHz 50dB 30MHz Let Through Slew Rate 28V us within the AC power wave envelope less than 10V us outside the power wave envelope Maximum Applied Surge Voltage...

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