Daikin WMC Instruction Manual Page 54
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IOM 1210-1 • MAGNITUDE
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MODEL WMC CHILLERS 54 www.DaikinApplied.com
Controller Inputs and Outputs
The following tables list the controller inputs and outputs, both analog and digital.
Table 20: Controller, Analog Inputs
# Description Signal Source Sensor Range
1 Reset of Leaving Water Temperature 4-20 mA Current 0 to 20°F
2 Entering Evaporator Water Temperature NTC Thermistor (10k@25°C) -58 to 212°F
3 Entering Condenser Water Temperature NTC Thermistor (10k@25°C) -58 to 212°F
4 Leaving Condenser Water Temperature NTC Thermistor (10k@25°C) -58 to 212°F
5 Liquid Line Refrigerant Temperature NTC Thermistor (10k@25°C) -58 to 212°F
6 Demand Limit 4-20 mA Current 0-100 %RLA
7 Evaporator Water Flow 4 to 20 mA Current 0 to 10,000 gpm
8 Condenser Water Flow 4 to 20 mA Current 0 to 10,000 gpm
9 Optional Tower Sump Temperature NTC Thermistor (10k@25°C) -58 to 212°F
10 Leaving Evaporator Water Temperature NTC Thermistor (10k@25°C) -58 to 212°F
NOTE: “Sensor Range” in Table 20 indicates the range of the input, NOT the operating range of the chiller.
Table 21: Controller, Digital Inputs
# Description Signal Signal
1 Unit OFF Switch 0 VAC (Stop) 24 VAC (Auto)
2 Remote Off/Enable 0 VAC (Stop) 24 VAC (Enable)
3 Mode Switch 0 VAC (Normal) 24 VAC (Alternate)
4 Manual Off 0 VAC (Off) 24 VAC (Enable)
5 Manual Off2 0 VAC (Off) 24 VAC (Enable)
6 Manual Off3 0 VAC (Off) 24 VAC (Enable)
7 Manual Off4 0 VAC (Off) 24 VAC (Enable)
8 Quick Off (All Off) 0 VAC (Quick Stop) 24 VAC (Enable)
9 Ground Fault 0 VAC (Alarm) 24 VAC (Off)
10 Ground Fault2 0 VAC (Alarm) 24 VAC (Off)
12 HATS Switch 0 VAC (Off) 24 VAC (Enable)
13 External Fault Congurable Congurable
17 Evaporator Water Flow Switch 0 VAC (No Flow) 24 VAC (Flow)
18 Condenser Water Flow Switch 0 VAC (No Flow) 24 VAC (Flow)
Table 22: Controller, Analog Outputs
# Description Output Signal Sensor Range
1 Cooling Tower Bypass Valve Position 0 to 10 VDC 0 to 100% Open
2 Cooling Tower VFD Speed 0 to 10 VDC 0 to 100%
3 EXV signal to IB Valve Control Bd. 0 to 10 VDC 0 to 100%
4 Tower Control Reset 0 to 10 VDC 0 to 100% Mask Reset
5 % Unit Load 0 to 10 VDC 0 to 125% (8V = 100%)
NOTE: “Sensor Range” in Table 22 indicates the range of the output, NOT the operating range of the chiller.
- Model WMC, C Vintage 1
- HFC-134a Refrigerant 1
- 50/60 Hz 1
- Table of ConTenTs 2
- InTroduCTIon 3
- General Description 4
- W M C 290 D CS 4
- The Control System 5
- Receiving and Handling 6
- Nameplates 6
- Location 6
- Clearance 6
- Mounting 8
- Water Piping 8
- Vessel Drains at Startup 8
- Condenser Water 9
- Temperature Control 9
- Relief Valves 10
- Field Insulation 11
- Field Power Wiring 11
- 12
- 12
- 13
- 14
- InsTallaTIon 16
- Communication Setup for 18
- Multiple Chillers 18
- Long Term Storage 18
- Pre-Start Checklist 19
- Operator Responsibilities 20
- Operator Schools 20
- Sequence of Unit Operation 20
- Unit Enabling/Disabling 20
- Operator Interface Touch 21
- Screen (OITS) 21
- VIEW Screens 22
- Detail View Screen 23
- View Menu Screen 25
- SET Screens 26
- Explanation of Setpoints 27
- TIMERS Setpoints 28
- ALARMS Setpoints 29
- Cooling TOWER Fan Setpoints 31
- Fan Stages 32
- VFD Speed (%) 33
- CAUTION 35
- MOTOR Setpoint Screen 36
- Compressor Capacity Control 37
- Capacity Overrides 37
- MODES Setpoints 38
- WATER Setpoints 39
- Service Screen 40
- HISTORY Screens 41
- Alarm History Screen 42
- Active Alarms Screen 43
- Possible Alarms and Events 44
- MODEL WMC CHILLERS 45
- Problem Alarms 46
- Warning Alarms 46
- The Controller 48
- Menu Structure (Scrolled) 49
- VIEW UNIT VIEW COMPRESSOR 50
- EVAPORATOR 50
- Setting Passwords 52
- Conguring the Control Source 53
- Clearing Alarms 53
- Controller Inputs and Outputs 54
- Controller Setpoints 55
- IOM 1210-1 • MAGNITUDE 56
- Building Automation 58
- Systems (BAS) 58
- Use with On-Site Generators 58
- Service Programs 59
- Chiller Maintenance 59
- Seasonal Shutdown 59
- Seasonal Startup 59
- Maintenance Schedule 60
- Denitions 61
- Temperature / Pressure Chart 64
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