Type io_k module connections – GE Industrial Solutions MX350 Instruction manual User Manual
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2–12
MX350 AUTOMATIC TRANSFER CONTROL SYSTEM – INSTRUCTION MANUAL
ELECTRICAL INSTALLATION
CHAPTER 2: INSTALLATION
Type IO_K module
connections
The IO_K module handles the automatic delayed start of the engine in case there is a total
power outage, i.e. Source 1 power fails and the MX350 is not powered by an auxiliary
power source. The terminal assignments are as follows:
Figure 14: IO_K module connections - standard ATS
Terminal
Type
Function
Type
F1
Output
S1 Sol Relay
N.O.
F2
Output
S2 Sol Relay
N.O.
F3
N/A
Common F1, F2
N/A
F4
Output
S1 Del Sol Relay
N.O.
F5
Output
S2 Del Sol Relay
N.O.
F6
N/A
Common F4, F5
N/A
F7
Output
Engine Start Signal (P Relay)
N.O.
F8
N/A
Engine Start Signal, Common
N/A
F9
Output
Engine Start Signal (P Relay)
N.C.
F10
Input
SN Limit Switch
pos.
F11
Input
SE Limit Switch
pos.
F12
Input
SNO Limit Switch
pos.
F13
Input
SEO Limit Switch
pos.
F14
N/A
Input Common
N/A
~1
~2
~4
~3
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
INPUT COMMON
Inp
com
SOURCE 2 LIMIT SW
DELAYED INPUT
Inp 4
Inp 3
Inp 2
Inp 1
SOURCE 1 LIMIT SW
DELAYED INPUT
SOURCE 2 LIMIT SW
INPUT
SOURCE 1 LIMIT SW
INPUT
P. RELAY - ENGINE
START - N.C.
P. RELAY - COMMON
P. RELAY - ENGINE
START - N.O.
COIL CONTROL RELAYS
3 & 4 COMMON
COIL CONTROL RELAY
DEL (OPEN SRC 2)
COIL CONTROL RELAY
DEL (OPEN SRC 1)
COIL CONTROL RELAYS
1 & 2 COMMON
COIL CONTROL RELAY
SOURCE 2
COIL CONTROL RELAY
SOURCE 1
SSR 3&4
COM
SSR 1&2
COM
SSR
SSR
SSR
SSR
SOURCE 2 LIMIT SWITCH (+24 V DC ACTIVE)
SOURCE 1 LIMIT SWITCH (+24 V DC ACTIVE)
NC
NC
NC
24 V DC
24 V DC
TO SOLENOID
TO SOLENOID
~1
~2
~4
~3
889741A1.CDR
~5
~6
Auto Transfer Control
~8
~9
~11
~10
~12
~13
~7
~14
INPUT COMMON
Inp
com
SOURCE 2 LIMIT SW
DELAYED INPUT
Inp 4
Inp 3
Inp 2
Inp 1
SOURCE 1 LIMIT SW
DELAYED INPUT
SOURCE 2 LIMIT SW
INPUT
SOURCE 1 LIMIT SW
INPUT
P. RELAY - ENGINE
START - N.C.
P. RELAY - COMMON
P. RELAY - ENGINE
START - N.O.
COIL CONTROL RELAYS
3 & 4 COMMON
COIL CONTROL RELAY
DEL (OPEN SRC 2)
COIL CONTROL RELAY
DEL (OPEN SRC 1)
COIL CONTROL RELAYS
1 & 2 COMMON
COIL CONTROL RELAY
SOURCE 2
COIL CONTROL RELAY
SOURCE 1
SSR 3&4
SSR 1&2
SOURCE 2 LIMIT SWITCH (+24 V DC ACTIVE)
SOURCE 1 LIMIT SWITCH (+24 V DC ACTIVE)
NC
NC
NC
0 VDC
0 VDC
24 V DC
24 V DC
TO SOLENOID
TO SOLENOID
STARTER
CCTRY
GEN
A
B
C