Emerson Daniel 1200 Series, Руководство пользователя

Страница: 21 / 114

4-20 mA transmitter output settings
(continued)
Table 1-4:
Setting Description
Calibration Factory calibrated: 0.0 to 1000.0 = 4-20 mA output
Underrange Output underrange: 3.8 mA
Overrange Display overrange: 20.5 mA
Output overrange: 20.5 mA
Accuracy ± 0.05% span ± 0.004 mA
Temperature drift 0.08 μ A/°C max from -40°C to 75°C ambient
External loop power
supply 30 VDC maximum
Output loop resist-
ance Power supply Minimum Maximum
24 VDC 10Ω 700Ω
30 VDC 100Ω 1200Ω
Note: loop-powered backlight subtracts 150
Ω
from maximum resistance
figures above.
1.6 Open collector output settings
The settings below are open collector output specifications for the Internal Display. Except
when noted all specifications apply to operation at +25°C (+77°F).
Open collector output settings Table 1-5:
Settings Description
Output assignment Two open collector pulse outputs Out 1 and Out 2. Individually programma-
ble for rate, total, or grand total alarms; rate, total, or grand total pulse out-
puts; or retransmitting of pulse inputs; constant timed pulse output; quadra-
ture outputs (required Out 1 and Out 2); or off.
Rating Isolated open collector, off: 24 VDC max, on: <1 V @ 150 mA max
Alarm output Assign to rate for high or low alarm trip point.
Assign to total or grand total for total or grand total alarms.
Alarm deadband 0-100% FS, user selectable
Alarm acknowledge Front panel ACK button resets output and screen indication.
Pulse output K-Fac-
tor (Count) K-factor (COUNT) programmable from 0.000001 to 9999999. Rate pulses
are generated as a scaled output of the rate input with one output pulse per
K-factor (count) number of input pulses. Total and grand total pulses are
generated for every total or grand total increment selected. (e.g. K-factor
value of 100 generates one pulse every time the total is incremented by 100
units). Rate retransmission pulses one to one for input pulses, up to maxi-
mum output speed. K-factor is not used for retransmitting outputs.
Introduction
User manual 9