M2C/M6C Programmable Contacts

If M2C or M6C contact kit is installed, use “Contacts M2C/M6C” menu to set alarm type and operational mode. The M2C kit has S1 and S2 contacts. The M6C kit has S1, S2, S3, S4, S5 and S6 contacts.

M2C/M6C Contact Kits Setup

Set M2C/M6C Contact Alarm Type

Enter M2C/M6C contacts alarm type into trip unit memory. Available alarms are:

Ir	Long-time pickup
Ii	Instantaneous pickup
Isd	Short-time pickup
	Ground-fault current
	Ground-fault alarm
Iunbal	Current unbalanced
Iamax	Phase A demand overcurrent
Ibmax	Phase B demand overcurrent
Icmax	Phase C demand overcurrent
Inmax	Neutral demand overcurrent
Vmin	Voltage is below set minimum
Vmax	Voltage is above set maximum
Vunbal	Voltage unbalanced
rPmax	Reversed power
Fmin	Frequency is below set minimum
Fmax	Frequency is above set maximum
ΦF rot	Phase rotation
Ished	Current shedding
Pshed	Power shedding
Not Selected	No alarms selected

Set up M2C/M6C contact alarm mode. Contact modes available are:

Latching contact—Stays latched until reset
Nonlatching contact—Drops out after fault is removed.
Time Delay—Delay placed on contacts

For troubleshooting purposes only the following modes are available:

Locked 0—Contacts are locked open
Locked 1—Contacts are locked closed

For short-time, instantaneous and ground fault (SIG) alarms only:

Each alarm occurrence will activate the relay and will signal and continue to signal an alarm until the trip unit test/reset button is pressed.
This “latching behavior occurs regardless of whether “latching” or “nonlatching” contact mode was used during alarm setup.

Set M2C/M6C Contact Alarm Mode

Reset displays states of relays and allows them to be reset.

NOTE: Select reset option under the M2C/M6C menu to reset all alarms. The test/reset button on the trip unit will reset the trip unit so that it will stop activating the alarm, but does not reset the M2C/M6C contact.