Measurement Computing CIO-DISO48 - Manual (Page 12)

CIO-DISO48 User's Guide Installing the CIO-DISO48
11
Caution! High voltages are present on the CIO-DISO48 when you have connected high voltage inputs or
outputs to the CIO-DISO48 connector.
Use extreme caution! Never handle the CIO-DISO48 when signals are connected to the board
through the connector. Never remove the protective plates from the CIO-DISO48 unless all input
voltages are removed first.
Cabling
The red stripe
identifies pin # 1
50-pin Female
IDC connector 50-pin Female
IDC Connector
1 2
49 50
2
50
1
49
Figure 5. C50FF-x cable
Field wiring and signal termination accessories
You can connect the CIO-DISO48 to the following screw terminal board using the C50FF-x cable.
 CIO-MINI50 – 50-pin screw terminal board.
Details on this product is available on our web site at www.mccdaq.com/products/screw_terminal_bnc.aspx .
Caution! Do not use exposed-screw terminal boards if your field voltage is more than 24 volts. Using a
screw terminal board with high voltage inputs or outputs exposes you and others to those high
voltage signals. Construct a safe cable to carry your signals directly from your equipment to the
CIO-DISO48 connector.
The CIO-DISO48 is a digital input board with signal conditioning installed. Most accessory boards are intended
to provide signal conditioning or easy-to-access signal termination. In general, the CIO-DISO48 does not
require additional signal conditioning unless you need to sense voltages higher than 28 V.
We recommend that you DO NOT use screw terminal boards to connect high voltage signals to the CIO-
DISO48. The CIO-DISO48 is intended to read high voltages. The use of screw terminal boards would expose
yourself and others to potentially dangerous high voltages.
For more information on digital signal connections
For more information on digital signal connections and digital I/O techniques, refer to the Guide to Signal
Connections. This document is available on our web site at available on our web site at
www.mccdaq.com/signals/signals.pdf ).