SMC Model 1026 Engineering Specification
Rev. 100812
Page 3 of 12
6.3
All outputs external to the electrical box shall be low voltage DC, Intrinsically Safe by
the definition of OSHA and National Electrical Code (NEC).
6.4
All devices and components that consume electrical power shall be UL listed and/or
approved, and shall bear NEMA (US Standards), IEC (International Standards) or other
recognized International ratings appropriate for the use intended. The control assembly shall be
produced in a UL Panel Shop and shall be UL listed.
6.5
Fault Conditions shall be annunciated on the operator interface screen, and shall be sent
to the RS232 interface port or the Ethernet port for printing and/or data acquisition. At least five
(5) fault conditions shall be so identified.
6.5.1 Emergency Stop - Depression of the Emergency Stop Button shall reset the
machine and display a fault message that identifies the source of the emergency stop
signal.
6.5.2 Door Open - Lack of positive door closure shall cause the machine to enter Pause
mode, from where the current cycle can be recovered. Fault message shall indicate which
door is at fault, if the machine is so equipped.
6.5.3 Drive Blocked - Failure of the drive to traverse the cabinet in the time allowed
shall cause the machine to enter Pause mode and shall cause the screen to display the
Drive Blocked message.
6.5.4 Sump Heat - Failure of the sump to reach the desired temperature in the expected
time shall cause the machine to enter pause mode and shall cause the screen to display the
Sump Heat Fault message.
6.5.5 Fill Fault - Fill Fault message shall be displayed and Pause mode shall be entered
whenever the sump fails to fill in the allotted time.
7.0
Pneumatically Operated Valves
7.1
All automatic ball valves shall be controlled by pneumatic operators. Electric-motor-
operated ball valves shall not be acceptable.
7.2
All automatic water and steam control valves shall be direct-operated pneumatic types.
Pilot-operated solenoid valves or any valve that incorporates a diaphragm-type sealing system
shall not be acceptable.