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PFSK142 3BSE006505R1 Control system card

PQMII Pulse Output Width: This user defined parameter defines the duration of the pulse initiated by the PQMII when a quantity of energy equal to the Pulse Output Interval has accumulated. It is based upon system parameters such that the PQMII pulse output will activate for a duration that is within the operating parameters of the end receiver. • PQMII Output Relay Operation: This user defined parameter defines the normal state of the PQMII output relay contacts, i.e. Fail-safe or Non-Failsafe. • Pulse Acceptance Capability of the End Receiver: This parameter is normally expressed as any one of the following: (a) Pulses per Demand Interval; (b) Pulses per second, minute or hour; (c) Minimum time between successive closures of the contacts. • Type of Pulse Receiver: There are 4 basic types of Pulse receivers: a) Three-wire, every pulse counting; b) Three-wire, every other pulse counting; c) Two-wire, Form A normally open, counts only each contact closure; d) Two-wire, counts every state change, i.e. recognizes both contact closure and contact opening. • Maximum Energy Consumed over a Defined Interval: This is based upon system parameters and defines the maximum amount of energy that may be accumulated over a specific time.

Connecting to an End Receiver Using KYZ Terminals 

Typical end receivers require a contact closure between KY or KZ based upon the type of receiver. The PQMII Pulse Output feature can be used with either two- or three-wire connections. The PQMII activates the designated Output Relay at each accumulation of the defined Pulse Output Interval for the defined Pulse Output Width. Therefore, each PQMII contact operation represents one interval. For end receivers that count each closure and opening of the output contacts, the PQMII Pulse Output Interval should be adjusted to match the registration of the end receiver. For example, if the end receiver counts each closure as 100 kWh and each opening as 100 kWh, the PQMII Pulse Output Interval should be set to 200 kWh

The PQMII Output Relays can be configured as Failsafe or Non-Failsafe to match the normally open/closed configuration of the KY and KZ connections at the end receiver. The K connection is always made to the COM connection of the designated PQMII output relay, and the Y and Z connections can be made to the N/O or N/C connections based upon the type of end receiver.