Belimo TRANE TAF Series, Technical Documentation Manual

Page: 136 / 168

136
I20683 - Subject to change.
Application
To control reheat coils and/or a fan stage in a fan-powered
terminal unit. The ADS-100 is controlled by a 2 to 10 VDC
reheat output of a temperature controller. (TRS-M)
Operation
The ADS-100 is designed to switch up to three independent
stages of reheat on and off, according to a 2 to 10 VDC
signal. The three output stages are furnished with a triac
output. Each stage can be adjusted independently from each
other over the 0 to 2.4° F throttling range of the TRS-M
temperature controller.
The ADS-100 is shipped pre-adjusted, as shown in the
following table. (Based on differential from setpoint)
If desired, each stage may be field readjusted for special
requirements. Three red LED indicators are provided to verify
when the stages are energized.
Setpoint Readjustment
Tools required: small screwdriver, voltmeter.
To readjust the output stages, the following procedure is used:
Connect the voltmeter to the desired switchpoint reference signal
output and terminal 1 (COM). Readjust the switch point
reference signal output with the corresponding potentiometer to
your desired switch point. The adjustment range is 2.5 to 9.5 VDC.
If you go below or above these values the ADS-100 may not switch
off or on properly. If this occurs you have to increase or decrease
your switching level until the ADS-100 works correctly.
ADS-100 Used as an Auxiliary Switch
The ADS-100 was originally designed as an accessory to switch
on stages of electric reheat from an electronic thermostat.
However, it can also function as an electronic auxiliary switch
from any device which can provide 0 to 10 VDC signal, such as
any feedback wire 5 from any …SR or type actuator.
The ADS-100 has 3 triac outputs rated at 10 VA maximum each
which will turn on, in sequence, with an increasing voltage.
●
●
●
24 VAC Transformer
Line
Volts
1
Common
2
+ Hot
3
Signal Input
4
Contactor
5
Ref. signal
6 Contactor
7
Ref. signal
8
Contactor
9
Ref. signal
ADS-100
COM
∩ ∩ ∩
∩ ∩ ∩
∩ ∩ ∩
Reheat output
(2 to 10 VDC)
from TRS-M
thermostat or
other controller
Reheat stage
(24 VAC con-
tactors 10 VA
max. per stage)
5,7,9 = Switch point reference signal for manual
adjustment of stages 1,2, & 3 respectively.
Actuator and controller must have separate transformers.
Stage 1
#1
#2
#3
1
1
}
Stage 2
}
Stage 3
}
2
(–)
(+)
2
●
●
●
Analog to Digital Switch ADS-100
For Proportional ( . . –SR) Actuators.
Wiring Diagram
1st. stage 2nd. stage 3rd. stage
Switch ON -0.45°F -1.35°F -2.25°F
Switch OFF -0.15°F -1.05°F -1.95°F
Switch ON 2.8V 5.8V 8.8V
Switch OFF 0.4V 0.2V 0.4V
ADS-100
3 7/16"
[87.3]
2"
[50.8]
1-3/8"
[34.9]
1
234
5
6
7
8
9
24 VAC Transformer
s
1
Common
2
+ Hot
3
4
5
6
7
8
9
ADS-100
●
– +
Voltmeter
●
●
●
Reference
Signal
VDC
Reheat stage turn on from setpoint
Switchpoint Adjustment Drawings
Technical Data ADS-100
Power supply 24 VAC ± 20% 50/60 HZ
Power consumption 1.5 W
Transformer sizing 3 VA (not including contactors)
Electrical connection 9 pole wire-terminal
Control input 2 to 10 VDC
Input impedance 100K
Ω
Adjusting range 2.5 to 9.5 VDC
Dead band 0.3°F fixed
Switching capacity 24 VAC 10 VA max.
(voltage sinking triac)
Mounting Snap-Track (provided)
Dimensions 3 1/4" x 2" (3 7/16" x 2" w/snap-track)
Dimensions
[All numbers in brackets are in millimeters.]