I-O Display Systems Basic I/O Product - Manual (Page 56)

Installation 2
2-2(Vol.2)
Power Wiring:
Power connections are made at the 2 position terminal block located on the module board
marked +5V and GND No. 8 captive wire clamps accept 10-16 AWG wire or spade lugs.
Power wiring conventions:
+ of the power source to the terminal marked +5V
- of the power source to the terminal marked GND
Power requirements
Voltage:
5.0- 5.4Vdc
Current: 250 mA + 25mA per digital module and 200mA per analog module.
Practices: In general it is good practice to reserve the +5Vdc power supply
exclusively for the task of powering one or more BASIC I/O ADs. As
with any microprocessor based equipment, reasonably clean power is
required for reliable operation. Sharing power with other devices such as
field signal transducers and contact excitation should be avoided