1640-IN-031-C-08 Page 87 of 104
MACO Series Controller Installation
Eurotherm/Barber-Colman
AC Inputs Operating Specifications
Supply Voltage:
100 to 240 Vac external
On Voltage:
≥92 Vac
Off Voltage:
≤30 Vac
Input Current:
15mA @ nominal voltage
Indicator:
LED per Input
Isolation:
Optically isolated as a group
For supply connections, use No. 18 AWG or
larger wires rated for at least 75°C (165°F).
If both Class 1 and Class 2 Input/Output Boards are present, it may be necessary to bundle wires and
route straight down through the wiring trough in order to meet minimum spacing requirements.
YesNo
Note: When counting boards in multi-rack
systems (for switch settings, RLD/screen pro-
gramming) count each control rack separately.
Class 2 Wiring must be separated a minimum of
1/4 inch from any Class 1 conductors.
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