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Installation 

5-1 

 

WMX SERIES DIMMER

 OPERATING 

MANUAL 

 

5.0 Fault 

Diagnosis 

NOTE

 

Contact your authorised JANDS Distributor for repairs or servicing. 

In Australia refer all repairs to an authorised JANDS service agent or return the 
faulty unit in suitable packaging to:  

JANDS Service Dept,  

Unit 2 / 26 Kent Rd 

Mascot NSW 2020 

Australia 

5.1 Output 

protection 

Each of the twelve output circuits is protected by a 10 Amp fast-acting 
thermal/magnetic circuit breaker. These breakers are designed to pass the rated current, 
but will disconnect the output circuit for any overload condition (the larger the 
overload, the quicker the disconnection).  

NOTE: 3-pin GPO outlet sockets are rated at 10 Amps. Dimmer channels should 
not be loaded beyond the socket capacity. 

The breakers protect the dimmer’s output devices from short-circuit loads, faulty wiring 
looms and save on expensive dimmer repairs. A tripped circuit breaker indicates a load 
fault that requires immediate attention. 

If a short-circuit lamp or output cable is plugged into the dimmer, the breaker will trip 
to disconnect the fault from the dimmer. In nearly all circumstances, this is quick 
enough to prevent damage to the output devices. 

In some circumstances however, a triac failure may be experienced, although these 
devices are usually quite reliable and robust. If a triac does fail, it will either turn a 
channel on to full (triac short-circuit), or turn it off (triac open-circuit). If a triac fault 
should occur, that channel may be isolated by manually tripping that channel’s circuit 
breaker. 

These breakers have been specified for electrical protection, reliability and safety. They 
will allow repeated turn-on surges to cold lamps without failure, while still protecting 
the triacs. The breakers will interrupt large short-circuit fault currents without damage. 

5.2 DMX 

faults 

The WMX dimmer features an “Output Hold” facility that “remembers” the last 
received DMX message. In the event of a cable being unplugged or severed, the WMX 
dimmer rack will continue to output the “Held” DMX levels until a new DMX message 
is provided. If no new data is received within 10 minutes the outputs are driven to 0. 

The 

DMX 

LED will flash slowly if the DMX signal is removed. 

Note that control consoles, when powered down, may transmit spurious DMX data 
which can unintentionally cause dimmer channels to turn on. Disconnect mains power 
when not in use. 

Summary of Contents for WMX

Page 1: ...WMX...

Page 2: ...r damage whatsoever arising from the use of information or any error contained in this manual It is recommended that all service and repairs on this product be carried out by JANDS PTY LTD or its auth...

Page 3: ...DMX 512 input 3 3 3 6 DMX termination 3 3 3 7 Power up sequence 3 3 4 0 Dimmer Operation 4 1 4 1 Operating modes 4 1 4 1 1 DMX mode 4 1 4 1 2 Test mode 4 2 4 1 2 1 Chn 4 2 4 1 2 2 PHS 4 2 4 1 2 3 CHS...

Page 4: ...g dimmers Flush to wall 6 7 6 4 Wall mounting dimmers Straddling cable trays 6 8 6 5 Wall mounting dimmers Conduit cable entry 6 9 6 6 Mounting the dimmer to the bracket 6 10 7 0 Maintenance 7 1 8 0 T...

Page 5: ...ures 12 x 2 4KW dimming channels DMX 512 digital control protocol DMX terminating switch Suitable for permanent installations Soft turn on characteristic Low acoustic electrical noise Toroidal output...

Page 6: ...ise From Top Left Control Breaker Panel Socket Outlet Panel Bottom Panel 2 1 Panel layout 1 CHANNEL OUTPUT SOCKETS The twelve output sockets are each rated at 10 amps 2 CHANNEL CIRCUIT BREAKERS If a b...

Page 7: ...PHASE LEDs Three blue LEDs one for each phase indicate that the three phase mains supply is available 9 DMX IN SOCKET Standard 5 pin AXR connector accepts DMX 512 signals from controller 10 DMX LOOP...

Page 8: ...corner of the panel allowing the panel to be placed to one side while working on the dimmer Connect the incoming mains power cables to the rising clamp terminals on the lower right side of the main ci...

Page 9: ...acing the covers check to make sure that the two earth straps are connected to the chassis and the front cover for the control and circuit breakers If not push connectors onto the tabs marked with the...

Page 10: ...t dimmer via the LOOP connector When power is on the DMX LED indicates the presence of DMX signals The DMX receiver input is protected against extreme over voltages across any input pins and from any...

Page 11: ...e WMX has two operating modes 1 DMX mode the dimmer is controlled from an external DMX 512 control console 2 Test mode the dimmer is controlled by the internal microprocessor and the front panel butto...

Page 12: ...the Channel Test menu The display shows the last channel tested C 1 C12 and immediately turns it on full The and buttons may be used to select a different channel The channel is output live and there...

Page 13: ...If no button is pressed within 3 seconds the dimmer returns to normal operation displaying the previously set DMX start channel 4 1 2 3 CHS Pressing Menu while CHS is displayed moves into the Chase m...

Page 14: ...ASE MENU DMX ADDRESS DMX ADDRESS Fla shing di l Times out after 3 S DMX ADDRESS TEST MENU TEST MENU TEST MENU PHASE TEST PHASE TEST PHASE TEST PHASE TEST PHASE B TEST ALL PHASE TEST PHASE C TEST Menu...

Page 15: ...or over voltage condition is present and the dimmer outputs will be off until the over voltage or over temperature condition is removed 2 When the Fault LED is on continuously one or more of the follo...

Page 16: ...immer In nearly all circumstances this is quick enough to prevent damage to the output devices In some circumstances however a triac failure may be experienced although these devices are usually quite...

Page 17: ...the dimmer If the heatsink temperature rises above the specified maximum the dimmer will automatically shut down the output drive The fan will continue to cool the heatsink during the shut down perio...

Page 18: ...er Service console Factory service Connect 100W incandescent lamp in parallel Radio interference Faulty EMC filtering Factory service All Channels flicker when dimmed Incorrect DMX protocol wiring Unt...

Page 19: ...he dimmer may be mounted in a 19 inch equipment rack 11RU of rack space required The dimmer may be mounted flush to a wall with the cabling coming through the wall An optional extended mounting bracke...

Page 20: ...ed at least 300mm from the floor to avoid excessive ingress of dust and fluff or as dictated by local building statutes Dimmers must be mounted at least 150mm below ceilings or shelves for adequate ve...

Page 21: ...rews not supplied Supply cable entry may be via a 32mm gland hole at the bottom right of the main chassis or by removing the links from one of the partially notched holes in the rear face of the dimme...

Page 22: ...g webs with shears De burr the metal Feed any cables supply output and control through this cable access cutout and place the bracket against the wall orienting the bracket as indicated on the bracket...

Page 23: ...h shears and remove the eight screws securing the bottom blanking piece De burr the metal Position the bracket over the cable tray against the wall orienting the bracket as indicated on the bracket Ma...

Page 24: ...ket noting the orientation marks on both pieces Use four thread cutting screws supplied at each side to screw the two pieces together forming an 80mm deep enclosure The enclosure formed has an assortm...

Page 25: ...he bottom of the dimmer to pivot away from the bracket 3 Feed any cables mains supply output or control into the rear of the dimmer and terminate them as necessary This may only be performed by a lice...

Page 26: ...he power cable or locking off the mains supply isolator Remove the front panels Blow clean the fan and internals with compressed air DO NOT spin the fan with compressed air the blades may break off Wh...

Page 27: ...W Maximum Dissipation 24 W channel 300 W total Maximum Ambient Temp 40 C Control Signal ANSI E1 11 DMX 512 A Protocol DMX Input 5 pin AXR male female Test Function Level Individual Channels 100 Group...

Page 28: ...nnector pin outs PIN No CONNECTION DMX IN CONNECTION LOOP 1 SHIELD SHIELD 2 IN OUT 3 IN OUT 4 nc Nc 5 nc Nc Table 8 2 DMX Connector Pin Outs 8 2 Mains wiring colour codes Phase A Red Phase B White Pha...

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