Emerson EXD-SH1 Betriebsanleitung Seite 2

EXD-SH1/2 Controller with ModBus communication
24 VAC/
VDC

Circuit 1 (EXD-SH1/SH2)

Circuit 2 (EXD-SH2)

Download/upload key
1 and 7 Supply voltage 24 VAC/DC
2 and 8 Temperature sensor circuit 1
3 and 8 Temperature sensor circuit 2
PT5N... circuit 1 & circuit 2 (white wire: 4 – 20 mA
4 and 5
signal)
9 + 12VDC Voltage input for PT5N... (brown wire)
Alternative ratiometric third Party Pressure Transmitter:
Warning: Read the note in the last page for limitation of
error condition
Pressure transmitter circuit 1 & circuit 2
4 and 5
(0.5 - 4.5 V signal)
11 + 5 VDC voltage input
10 GND Ground
Emerson Climate Technologies GmbH
Am Borsigturm 31 I 13507 Berlin I Germany
Operating instructions
capability for electrical control valves
*
See parameter 2uP
Electrical control valve circuit 1 (ECV1)
14-17 EXV-M... Electrical plug: wire colors
WH-white BK-black BL-blue BN-brown
Electrical control valve circuit 2 (ECV2)
19-22 EXV-M... Electrical plug: wire colors
WH-white BK-black BL-blue BN-brown
23 and 24 RS485 (+/-terminal)
Alarm relay circuit 1 (C, NO) – Suitable for
25 and 26
24 VAC/DC
Alarm relay circuit 2 (C, NO) – Suitable for
27 and 28
24 VAC/DC
Digital input circuit1 (DI1) – Dry contact,
29 and 30
potential free
Digital input circuit 2 (DI2) – Dry contact,
31 and 30
potential free
35 and36 Battery/Super capacitor connection terminal

Fuse: EXD-SH1 (1A), EXD-SH2 (2A)
6,12,13,
Not used (Terminals on EXD-SH12)
18,32-34
www.climate.emerson.com/en-gb
Wiring options: UPS (ECP-024) /Supercap (EXD-PM)
UPS for up
to two
controllers
One supercap
for one EXD-SH1
24 V
Two supercaps
for one EXD-SH2
24 V
Warning:
• Use a class II category transformer for 24VAC power supply. Do not ground
the 24VAC lines. We recommend using individual transformers for EXD-
SH1/2 controller and for third party controllers to avoid possible interference
or grounding problems in the power supply.
• If EXD-PM is connected, it is mandatory to have individual transformer for
EXD-SH... and EXD-PM.
EXD-SH12_OI_EN_DE_FR_IT_PL_RU_0720_R04_865917.docx
24 V
24 V
24 V
*) Parameter 2uP with No. 8 = only pressure
sensor circuit 1 is used
Date: 29.07.2020