INFICON MDC-260 Thin Film Deposition Controller - Manual (Page 103)

MDC-260 DEPOSITION CONTROLLER
CONTROLLER INSTALLATION 8-3
5. If fuse replacement is needed, pull out the fuse holders. Check and
replace fuse(s) with the correct type. Replace the fuse holders back into
the module.
6. Close the module cover, making sure the selected voltage shows through
the window.
8.3.4 GROUND LUG
Use heavy ground wire, wire braid, or copper strap of #12 AWG or larger to
connect this grounding lug directly to a facility protective earth ground to provide
additional protection against electrical shock. In particularly noisy environments
the MDC-260 should be grounded to the instrument rack, or other good ground,
by means of the grounding lug in the rear panel. (See Figure 8-4).
8.3.5 REMOTE POWER HANDSET
Figure 8-3 shows the location of the receptacle into which the Remote Power
Handset is plugged.
8.3.6 SENSOR INTERFACE
The MDC-260 sensor interface is a 50-Ohm coax cable terminated with BNC
connectors [similar to AMP 225395-1 (plug) and AMP 225396-1 (jack)]. The
BNC jacks on the rear panel mate with a sensor oscillator.
8.3.7 SOURCE INTERFACE
The MDC-260 source interface is a 4-pin, circular mini DIN connector
[equivalent to CINCH MDSS-4S]. The pin layout is defined in Figure 8-5 and
Table 8-1 supplies pin signal assignments.
8.3.8 USB COMMUNICATION
CAUTION: The interface is designed only for one connection at a time. Do
NOT attempt to connect both front and back USB ports to host computers.
There are two USB “B” Type connectors on the MDC-260, one is located on the
front and the other is in the back of the unit. They are both label “USB”.
8.3.9 DISCRETE INPUT/OUTPUT
The MDC-260 communicates to external devices and logic controllers through the
Discrete Input/Output D37P connector. When configured as “Passive”, an input
is asserted by shorting the desired input pin pair (the inputs are internally pulled-
up to 5V through a 4.7 K
Ω resistor). When configured as “Active”, an input is
asserted by supplying a 12- to 120-volt AC or DC signal to the desired input pin.
Each discrete output is a relay that is closed when certain internal conditions are
met. Refer to Section 4.3.3.2 and 4.3.3.3 for I/O programming instructions.