Loop Leader PD6622/4 Loop-Powered Rate/Totalizer Instruction Manual
6
Open Collector Output
Rating
Two NPN, Isolated open collector, 30 VDC @
90 mA maximum
Output
Assignment
Pulse, Alarm, Timer, Total Reset, or Disable
Pulse Output
Source
Rate, Total, Grand Total, or Test Frequency
Pulse Output
Factor
0.000001 to 999,999.9
Pulse Width
2 ms; 50% duty cycle
Pulse Output
Frequency
250 Hz maximum
Quadrature Pulse
Output
Available for Output 2 (90° behind Output 1)
Alarm Output
Source
Assign to Rate, Total, Grand Total or Digital
Input
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user programmable
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each output
Alarm Operation
Auto, Auto-man, Latch, Latch w/clear
Alarm Indication
Red backlight, Flashing display, Alarm Mes-
sage, Alarm symbol (!)
Alarm Message
On or Off; User programmable, 8 characters
maximum
Displayed every 10 sec for 1 sec on bottom
Alarm
Acknowledge
Front panel ACK button or external digital in-
put resets output and screen indication
Auto Initialization
When power is applied to the meter, relays
will reflect the state of the input to the meter
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Timer Start/Stop
Front panel or digital input, user selectable
Solid State Relays
Rating
Resistive Load: 250 VAC/DC @ 1 Amp
Inductive Load: 1/10 HP @ 125/250 VAC/DC
Noise
Suppression
Metal oxide varistors across outputs
Relay
Assignment
Alarm, Timer, Batch Control, Sample, or Disa-
ble
Alarm Output
Source
Assign to Rate, Total, Grand Total, or Digital
Input
High or Low
Alarm
User programmable for high or low alarm
Alarm Deadband
0-100% FS, user
programmable
On & Off Time
Delay
0 to 9,999 seconds
Fail-Safe
Operation
Independent for each relay
Alarm Operation
Auto, Auto-man, Latch, Latch w/clear
Alarm Indication
Red backlight, Flashing display,
Alarm Message, Alarm symbol (!)
Alarm Message
On or Off; User programmable, 8 characters
maximum. Displayed every 10 sec for 1 sec
on bottom
Alarm
Acknowledge
Front panel ACK button or external digital in-
put resets output and screen indication
Auto Initialization
When power is applied to the meter, relays
will reflect the state of the input to the meter
Timer Output
One-shot or Continuous
Off Time Delay: 1 sec to 99:59:59
(hrs:min:sec)
On Time: 1 sec to 99:59:59 (hrs:min:sec)
Timer Start/Stop
Front panel or digital input, user selectable
4-20 mA Transmitter Output
Output Source
Rate, total, re-transmit;
reverse scaling
allowed
Scaling Range
1.00 to 23.0 mA
Disable
High impedance state, less than 1 mA
Calibration
Factory calibrated 4.00 to 20.00 mA
Underrange
1.0 mA, 3.5 mA, or 3.8 mA (If input < 3.5 mA);
or Off; user selectable
Overrange
20.5 mA, 20.8 mA, or 23.0 mA (If input > 20.5
mA); or Off; user selectable
Isolation
500 V
Accuracy
±
0.05% FS
±
0.001mA
Temperature Drift
0.5 µA/°C max from -40 to 75°C ambient
External Loop
Power Supply
7.0 VDC to 30.0 VDC maximum
Output Loop
Resistance
10-
750 Ω @ 24 VDC; 100-1100 Ω @ 30 VDC
