Trane RTAA-100, Installation & Maintenance Manual

Page: 101 / 178

RTAA-SVX01A-EN 101
Controls Interface
2-10 VDC/4-20 mA Input for External Chilled Water Setpoint (CWS) and
Current Limit Setpoint (CLS)
When either external CWS or external CLS is used on the optional Module
1U2, DIP switch SW1 positions 1 and/or 2 must be set to accommodate the
type of signal source the customer has chosen, either 2-10 VDC or 4-20 mA.
Position SW-1-1 sets 2-10 VDC/4-20 mA for external CWS. SW1-2 sets 2-10
VDC/4-20 mA for external CLS. The “OFF” setting configures the external
input for 2-10 VDC; the “ON” setting configures the external input for
4-20 mA.
Table 18 Compressor Overload DIP Switch Settings
Compressor
Tons
Volts/Hz RLA
Primary Turns
Through Current
Transformer Current
Transformer
Extension*
Overload Setting Dip
Sw/Decimal12345**
35 200/60 115 1 -02 01011/11
230/60 100 1 -01 11111/31
346/50 58 1 -10 01100/12
380/60 61 1 -10 10000/16
400/50 50 1 -10 00000/0
460/60 50 1 -10 00000/0
575/60 40 1 -09 01111/15
40 200/60 142 1 -02 11011/27
230/60 124 1 -02 10001/17
346/50 72 1 -01 00111/7
380/60 75 1 -01 01010/10
400/50 62 1 -10 10001/17
460/60 62 1 -10 10001/17
575/60 50 1 -10 00001/1
50 200/60 192 1 -03 11100/28
230/60 167 1 -03 10010/18
346/50 96 1 -01 11100/28
380/60 101 1 -02 00001/1
400/50 84 1 -01 10011/19
460/60 84 1 -01 10011/19
575/60 67 1 -10 10111/23
60 200/60 233 1 -04 10011/19
230/60 203 1 -04 01000/8
346/50 117 1 -02 01101/13
380/60 123 1 -02 10001/17
400/50 101 1 -02 00001/16
460/60 101 1 -02 00001/1
575/60 81 1 -01 10000/16
*The Current Transformer base part number is X1358025. The numbers in this column are suffixes to the base number.
**On the DIP switch, 1=ON, O=OFF The decimal value should be set in the compressor overload setting menu of the UCM. If the DIP
switch value does not match the decimal value entered into the UCM, the related compressor(s) will continue to run, but a
diagnostic will be initiated, both settings will be ignored, and the UCM will use the lowest possible trip setting value.