Green Flow GF-A1000-DI, GF-A1001-DI
INSTALLATION GUIDE
–ANALOG OUTPUT THERMAL DISPERSION AIRFLOW
MEASURING DEVICE
6
GreenTrol Automation • 156 Holly View Lane., Loris SC 29569 • Toll Free: 877.4GNTROL (446.8765) • Fax: 877.425.2026 • Internet: GreenTrol.com
4.1
GF-A1000-DI/GF-A1001-DI 24 VAC Power Connections
The GF-A1000-DI
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requires a power source capable of providing 22.8 to 26.4 VAC at 5 VA.
CAUTION
24 VAC power must be deactivated before making connections to the instrument.
Connect 24VAC power between the red wire and black wire as shown in Figures 4 and 5.
4.2
GF-A1000-DI/GF-A1001-DI Analog Output Connections
The GF-A1000-DI/GF-A1001-DI provides separate 0-10VDC (or 2-10VDC) analog outputs corresponding to airflow (or equivalent
velocity pressure) and temperature. The outputs are capable of driving 20mA loads. The analog outputs are not isolated from the
input power. The 24VAC input ground connection is shared with the analog signal ground (black wire - GND). If isolated outputs
are required, the GF-A1000-DI/GF-A1001-DI must be powered by a dedicated transformer.
Connect the analog airflow output (white wire), temperature output (green wire on GF-A1001-DI only) and the signal common
(black wire) to the BAS monitor/control interface using shielded twisted pair cable as shown in Figures 4 and 5.
4.2.1
Converting the GF-A1000-DI/GF-A1001-DI Analog Output for 4-wire Current Loops
The VDC output circuit of the GF-A1000-DI
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transmitter can drive the input circuit of devices designed to
measure 4-wire current loops with a resistive load
250 ohms.
5
GF-A1000-DI/GF-A1001-DI ANALOG OUTPUT CONFIGURATION OPTIONS
(CONFIG SW1 - SW4)
To access the field selectable analog output configuration switches, remove the four retaining screws at each corner
of the GF-A1000-DI
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enclosure cover. Configuration selector switches SW1 through SW4 are part of a four-
switch DIP package labeled CONFIG. Figure 3 shows the GF-A1000-DI
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main circuit board and the
individual switches for setting the output measurement mode, analog output voltage range and output full scale
values. Factory default switch settings are all OFF. The table below shows the CONFIG switch settings and resulting
operation for each of the GF-A1000-DI
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model versions.
Table 1. CONFIG Switch Settings
IG_GF-A
10
00-
DI
_R
1
A