The CN6221 Series is an FM approved limit controller that can be configured either as a high limit or as a low limit controller. The CN6221 features universal input, Optional 2 alarm outputs, Optional retransmission output, a timer to count the total time the setpoint is exceeded, and a register to retain the maximum. The RS485 communication interface is available as an option.
Voltage: 100 to 240 Vac (±10%),
Frequency: 50 or 60 Hz
Maximum Power Consumption: 8 Va max (4 W max)
Memory: Non-volatile memory
Withstanding Voltage (Between Primary and Secondary Terminals): 1500 Vac for 1 min (see Note1)
Insulation Resistance (Between Primary and Secondary Terminals): 20 MΩ or more at 500 Vdc (see Note 1)
Note 1: The primary terminals are the power supply terminals and relay output terminals. The secondary terminals are the analog input and output terminals, the voltage pulse output terminals, and the contact input terminals.
Function: Resetting "exceeded status"
Input: 1 point
Type: Non-voltage contact or transistor contact
Contact Capacity: At least 12 V/10 mA
On/Off Judgment: On state for 1 kΩ or less; off state for 20 kΩ or greater