Fig 19 - Vsd Components - York YCAV0157 Installation Operation & Maintenance

Air-cooled screw liquid chillers
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FORM 201.21-NM1 (1223)
COMPONENT LOCATIONS (CON'T)
17-21 FU FUSES
TRANSIENT
(17 FU: 2T, 18 FU: VSD Logic /
SUPPRESSOR BOARD
SCR Trigger Board /
(3-Phase Input)
Pump Contactor,
4-6 CT
19 FU: 10T & 11T,
4-9 FU FUSES &
CURRENT
20 FU: Relay Board #1,
14-16 FU FUSES
TRANSFORMERS
(4-6 FU: TB-1-3 SCR
21 FU: Relay Board #2
3-8 RES RESISTORS
Trigger Board,
(Motor Output RC
7-9 FU: Sys. 1 Fans,
10 CR FAN PUMP
"DV/DT Network)
14-16 FU: Sys. 2 Fans)
CONTROL RELAY
COOLING
COOLING
FAN
FAN
6
LD10585
3-8 RES RESISTORS
1L AC LINE
(Motor Output RC
INDUCTOR
CAPACITORS C15-C17
"DV/DT Network)
(Motor output RC "DV/DT"
Network)
FIG. 19 - VSD COMPONENTS
143
JOHNSON CONTROLS

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