2-Input Integral Reset Factory Replacement Temperature or Humidity Controller (Barber Colman)
This controller provides precision control for mixed air dampers,heating and cooling valves,air units,chillers,laboratories,computer rooms,test chambers,and other applications.
• System 8000 two input controller
• Automatic Reset Action
• Control signal inversion capability
• High signal selection
• Ramp up and ramp down operation
• Anti wind-up capability
Temperature: TS-8000 series one or two;three sensors through a CN-8101 multi-purpose bridge.
Setpoint adjusters: SPA and SPB,41 to 95 qF (5 to 35 qC).
Remote setpoints: Order separately AT-8122,AT-8155,or AT-8158.
Throttling range: 10
•F degrees (5
•C degrees)factory set,20 and 30
•F degrees (11 and 17
•C degrees)pin selectable.
Authority ratio adjustment: Factory set 1:1,pin selectable 0.5,0.75,15:1,others available.
Bridge action: Factory set,
• ,D.A.(direct acting),
• R..A.(reverse acting),can be made reverse acting.
Auxiliary bridge input: For remote setpoint adjusters,night setback,etc.
Control amplifier output voltage (OP1): 2 to 15 Vdc.Unit factory calibrated for 7.5 Vdc output with sensor at setpoint temperature.
Integral action time: Dial adjustable 0.3 to 3 repeats per minute.
Integral action limiter: Limits output signal from integral action section to 2 Vdc above input signal in ramp up mode or 2 Vdc below input signal in ramp down mode.
Anti-wind-up or down: On system startup,normal proportional control signal from OP2 until the input voltage to IV1 is less than 7.5 Vdc (anti-wind-up)or greater than 7.5 Vdc (anti-wind-down),at which point integral action is initiated.
Signal inversion: Adjustable at SPC from 5.5 Vdc above or below the input signal at IV2.
Softstart: On system startup.
Time: Adjustable 3 to 60 minutes for 3 Vdc output change.
Start: point Adjustable 0 to 15 Vdc.
Restart: Momentary contact closure between RST and COM restarts ramp function.
Power requirements: 20 Vdc,40 mA +2 mA per System 8000 controlled device.
Power supply available: 6.2 Vdc 4 mA maximum.This regulated and filtered power supply must not be connected to +6.2 or red lead of other supplies.
Calibration potentiometers: Internal.
Number of controlled devices: Maximum of six System 8000.
Ambient temperature limits: Shipping and storage:-40 to 160 qF (-40 to 71 qC). Operating:40 to 140 qF (4 to 60 qC).
Humidity: 5 to 95%RH,non-condensing.
Locations: NEMA Type 1 indoor only.
Connections: Coded screw terminals.
Mounting: Unit provided with plastic track for panel mounting.AD-8912 enclosure can be ordered separately for remote installations.
Dimensions: 4 H x 7-1/2 W x 2-1/2 D in.(102 x 191 x 64 mm).
Replaces Part Numbers: