Logic supply +Vcc (+5, +15 or +24 V dc) and dc return is supplied through the 2 terminal logic supply connector, marked with + or –.
Logic supply dc return is connected to all even pins of the 50 pin edge card connector
Signal pin is pulled up to +Vcc when not asserted, down to dc return when asserted.
Power-side terminals are polarized for dc applications, and non-polarized for ac applications.
The backplane is shipped with a jumper configuration to supply the logic voltage through pins 1 and 49 of the edge connector. If logic voltage is not desired on these pins the J suffix.
Logic-side connector pin numbers are for 50 pin connector.
The 1771-JMB mounting board can be used with 16, 1781-series slim, miniature or standard size modules. The terminal block accepts ring or spade lugs, and insulated wire with stripped ends. Each power side point is individually isolated from each other. The signal side has a common logic supply bus (+Vcc and dc return) shared with each of the modules. The 1771-JMB has an edge connector. The 1771-JMBH has both an edge and a header connector. Both models have a jumper connecting power from the ribbon cable. Specify 1781-CxEx Cable. Assembly for 1771-JMB or JMBJ; or 1781-CxHx Cable Assembly for 1771-JMBH or 1771-JMBHJ. 1771-JMBxx is not available for mounting on DIN-rails.
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