Redundant Output Contacts - The 4480 series uses double "positive guided" output relays. Each relay is checked for proper status prior to beginning a machine cycle.
Control Reliability - The 4480 series is designed to meet the OSHA classification of "control reliability" as defined in section 1910.217(13).
Hand Switch Inputs - The control is designed to interface with dry contact, single pole hand switches and electronic hand sensing devices with relay output.
Anti-tie down - The output is activated by depressing the two hand switches within a fixed period of time (factory set at .5 sec.). The load will remain energized until one or both start switches are released or the reset switch is opened. If one or both switches are tied down (continuously energized), the 4480 monitor will not operate.
Universal Power Configuration - The 4480 series allows 115 or 230 volt operation at 50 or 60 Hz.
Low Voltage Detector - The low voltage detector inhibits operation and causes the control to reset if power supply voltage drops below 90VAC (115V application). The control will also reset on brief dips in supply voltage.
System Check Cycle - When the power is turned on, the control will begin a 5 second system check cycle. During this check, the output is disabled and a machine cycle cannot be started. This helps prevent an unwanted machine activation when power is first applied to the system.
Detachable Terminal Strip - The 4480 series is wired using a detachable terminal strip, which makes installation and removal much easier.