Distribution Rack 7-Branch Expansion Board - Elsteam EHPN Series Operating And Maintenance Manual

6.5.3 Distribution rack 7-branch expansion board

Main rack
control board
SCI1
70 71 72 73
Out1
Terminal 1
Main rack board
TERMINALS
Powersupplyconnectiontomainrackboard
55-59
(terminal 1)
56-2 Connection to expansion branches L4
57-2 Connection to expansion branches L5
58-2 Connection to expansion branches L6
60-2 Connection to expansion branches L7
63-64 No connection N.C.
65-66 No connection N.C.
70...73 ConnectiontomainrackcontrolboardSCI1
74...77 No connection N.C.
78-79 No connection N.C.
924EHPNE4.01 - EHPN series humidifiers
HMI
74 75 76 77
Out2 Out3 Out4
55 56 57 58 59 60
Fig. 34. Electrical connections for the 7-branch distribution rack
CT2 CT3
78 79 80 81
DP1
USB
Out5 Out6
61 62
Terminal 2
Main rack board
80-81 No connection N.C.
82...85 No connection N.C.
86-87 No connection N.C.
88-89 No connection N.C.
Modbus communication address of 7-branch expansion
board
1 2 Address offset relative to LA1
OFF OFF LA1 + 0
DP1
OFF ON LA1 + 1
ON OFF LA1 + 2
ON ON LA1 + 3
Activate termination resistor on SCI1 RS-485 serial line.
DP2
1 =SCI1RS-485serialtermination;2=Reserved
| 48 | Electrical connections |
SCI1
82 83 84 85
DP2
LS2 LS3
63 64 65 66
02/2024