Johnson Controls UNT110-1 - Page 78

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UNT Controller—Unitary (UNT) Controller
Table 37: Input/Output Specifications for UNT 110/111 and UNT 140/141
Function Reso-
lution
Sampling
Time
Accuracy Range DC Input
Impedance
Sensor/
Load
Impedance
Noise
Protection*
Noise/Surge
Standard
Tested To*
AI-Voltage
14 bit 1.5 sec
±3.3 mV
±20 mV
0-2V
0-10 VDC
10M ohm
125k ohm
0-5k ohm NM ResCap
IEEE-587
AI-
Temperature
14 bit 1.5 sec
±0.5°F
1000 ohm Si 3540 ohm 0-2k ohm NM ResCap a) CM Ringwave:
1.5k V
AI-
Temperature
14 bit 1.5 sec
±0.7°F
1000 ohm Ni 3540 ohm 0-2k ohm NM ResCap b) NM Bi-Wave:
1.5k V, 3k A
AI-
Temperature
14 bit 1.5 sec
±1.3°F
1000 ohm Pt 3540 ohm 0-2k ohm NM ResCap
IEEE-472
AI-
Potentiometer
14 bit 1.5 sec
±0.1°F
0-2k ohm
Potentiometer
3540 ohm 0-2k ohm NM ResCap a) CM Ringwave:
1.5k V
ACCUM-DC
32 bit 10 ms
(100 Hz)
1 bit 0-15 VDC,
2.5V Trig **
47k ohm 0-5k ohm NM ResCap b) NM Ringwave:
500V
BI-DC Sense
1 bit 10 ms N/A 0-15 VDC,
2.5V Trig **
47k ohm 0-5k ohm NM ResCap
AO Voltage
8 bit 1.5 sec
±0.2V
0-10 VDC @
10 mA
maximum
N/A 1k-10M ohm No Special
Parts
BO-AC Triac
N/A 1.5 sec N/A 24 VAC
@ 50-800 mA
N/A 30-480 ohm NM Cap
DC Supply
Out
N/A N/A N/A 14.6-17 VDC
@ 90 mA
N/A 162-10M
ohm
Diode
N2 Bus
N/A N/A N/A 1520 m
(5000 ft)
N/A N/A PTC + Opto +
Tranzorb
IEEE-587
CM Ringwave:
1.5k V
NM Ringwave:
500V
Zone Bus
N/A N/A N/A 150 m (500 ft)
of 18 AWG
N/A N/A PTC +
Tranzorb
IEEE-472
CM Ringwave:
1.5k V
NM Ringwave:
500V
State of Outputs During Power Fail = Disables when 24 VAC PWR drops below 18 VAC
State of Outputs After Power is Restored = Remain disabled for 10 seconds minimum, and then come on per
Restart Configuration.
* NM = normal mode, CM = common mode, Res = resistor, Cap = capacitor
** To interface to TTL outputs such as demand meters, use an open collector output to drive the +15 VDC pull-up
resistor and contact cleaning current capacitor.