Doepfer MTC64 Power Board - Manual (Page 3)

The MTC Power Board is an expansion board for the universal MIDI control
electronics MTC64. It is used to switch mains voltages (230V/115V) to drive mains
voltage devices. For example lamps or other mains loads can be controlled by MIDI
note on/off messages.
These are the most important features:
• 16 power outputs 115V or 230V
• max. 2A for each output (i.e. 460 Watt/VA @ 230V resp. 230Watt/VA @ 115V)
• max. total load for all outputs 16 A, i.e. 1A for each output in case of equal loads
for all outputs (= 115 Watt/VA @ 115V resp. 230Watt/VA @ 230V)
• zero crossing switches to reduce mains interferences
• separate fuse for each output
• mains and load connections via screw terminals
• up to four MTC power boards can be connected to one MTC64 main board
• connection between MTC power boards and MTC64 main board via one 10 pin
ribbon cable leading from the main board to all power boards, and a 16 pin ribbon
cable between main board and power board (one for each power board). Please
specify how many power boards have to be connected to the main board
(because of the lenght and number of female connectors of the 10 pin ribbon
cable)
• ribbon cables are included with the power board, cables for mains and loads
connection are not included
• If an old MTC64 main board is used the integrated circuits labelled CD4094 have
to be replaced by 74HC4094 (valid only for MTC64 main boards manufactured
before January 2005, in case of orders of main boards in combination with power
boards the main boards are already equipped with 74HC4094)
• Different versions are available:
16 stages (full version)
8 stages only
4 stages only
0 stages (i.e. all electronic parts are assembled except the solid state relays,
these may be added by the user)
• For the partial versions (8/4/0 stages) all electronic parts except the (expensive)
solid state relays are assembled, even the fuse holders and screw terminals for all
outputs are assembled
• The board is tested only for solid state relays manufactured by Sharp (type
S202T02). We cannot guarantee that it will work with other solid state relays.
The sketch on the page 4 shows the wiring of the MTC Power Board(s) with the
MTC64 main board, the mains and the loads.