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ROBERTS GORDON
CORAYVAC
FIGURE 14: CORAYVAC
Ground shield (on and only) indicated by;
Connections indicated by;
Separate line and low voltage circuits.
Notes:
- Do not run low voltage wiring through section of enclosure that houses VFD(s).
- Do not run line and low voltage wiring in same circuit
- Dashed lines indicate field wiring
CONTROL PWR IN
(Optional)
TOUCH
SCREEN
24Vac
26Vdc
A B C D
S1
S2
Gnd
RS485
TO ZONE
SENSORS
TO RELAY 5
TO RELAY 6
OUT AIR TEMP
IOPro812u
Rev 6
07/10/12
Aux Power Out
24 Vdc
24 Vdc
200mA maximum
26
®
M
H
C
C
ODULATING
EATING
ONTROL
®
Modulating Central and Satellite Control Internal Wiring, 3Ø
120V 60HZ
1O 20A
TO PS 2
L
N
GND
BLK
WHT
GRN
CB2
N G
N
N N N N
G
G
L L L L
20A
Without Keypad:
Power
24Vac, 50VA
2A, 50-60 Hz
26Vdc, 23W, 0.9A
Off
On
ONLY Use Copper
Conductors
Class 2
Power
Port 1
Net +
Module
3V Lithium Battery
Status
Port 1 BT485
Net -
CR-123A
Status Codes
ARC-
Port 1
485
Chase = OK
Shield
156
Blinking Dot = 'Run'
Port 2a BT485
0 = Download required
2 wire 4 wire
EIA-232
1 = Control Program Error
Port 2a
2 = RAM full
Net+
Tx +
Tx
3 = Comm setup error
Net-
Tx -
Rx
4 = System error
Port 2a
Gnd
8 = Formatting
n/c
Rx +
DTR
EIA-232
Rnet+
n/c
Rx -
DCD
Rnet-
EIA-485
Signal Ground
+12V
BAUD 4
Sense
4-wire
9600 Off Off
Local
19.2 K Off On
2-wire
Gnd
Access
38.4 K On Off
76.8 K On On
Rnet +
Rnet
Rnet -
Xnet +
+12V
Xnet -
Gnd
Xnet Expansion
1
+
I/O Pro 812u
UI-1
2
Gnd
3
+
UI-2
CONTROLLER
4
Gnd
5
+
UI-3
6
Gnd
7
+
UI-4
®
8
Gnd
1
+
UI-5
2
Gnd
3
+
UI-6
4
Gnd
5
+
UI-7
6
Gnd
7
+
Inputs: All
UI-8
10V Max, 20mA Max
8
Gnd
1
+
UI-9
Pot
Auto Off On
2
Gnd
0-20mA
Relay
3
+
0-10Vdc
UI-10
4
Gnd
Set Pot Full CW
5
+
UI-11
6
Gnd
7
+
Universal Input
UI-12
Mode Select
8
Gnd
mA
Volts
Thermistor/
dry-contact/
RTD
Open Energy
Management Equipment
10/100 BaseT
Ethernet Port E1
88F0
100
LAN
LINK
E143900
TYPE: 002003
Port 2b
I
M
ONTROLLER
NSTALLATION
ANUAL
Pump
operated
zones
TO PS 1
12
12
12
12
12
12
12
12
12
12
12
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
NC
14
14
14
14
14
14
14
14
14
14
14
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
NO
11
11
11
11
11
11
11
11
11
11
11
COM
COM
COM
COM
COM
COM
COM
COM
COM
COM
COM
N1
N1 N1
(A2)
(A2)
(A2)
(A2)
(A2)
(A1)
(A1)
(A1)
(A1)
(A1)
FROM
FROM
PS1
PS2
Port 1 Tx
Port 1 Rx
External
Battery
Archive Valid
Gnd
Port 2a Tx
+3V
Port 2a Rx
Brownout
Battery low
Ext. Batt.
Int. Batt.
Format
8
7
See BAS Table Below
6
BAS Port
5
2
1
4
IP Addr
3
Assigned Default
2
Enhanced
1
Access Port 2a
On
Off
Off
BAS Port Settings
Protocols 6
7
8
5
MS/TP m
Off
Off
Off
1's
MS/TP s
On
Off
Off
Controller
PTP
Off
On
Off
N2
On
On
Off
Address
Modbus
Off
Off
On
Lon SLTA
On
Off
On
10's
Lon OptionOff
On
On
UO-8
UO-7
UO-6
UO-5
UO-4
UO-3
UO-2
Modulation signals
UO-1
to Unitary heaters
Gnd
8
Zone 4 Unitary
UO-8
+
7
Gnd
6
UO-7
Zone 3 Unitary
+
5
Gnd
4
Zone 2 Unitary
UO-6
+
3
Gnd
2
24Vac
Zone 1 Unitary
UO-5
+
1
DO NOT APPLY 24Vac TO
Gnd
8
UNIVERSAL OUTPUTS
UO-4
External 24Vdc relay coil only
+
7
Gnd
6
UO-3
+
5
Outputs
Gnd
4
24Vdc Max, 50mA Max
UO-2
+
3
Gnd
2
UO-1
+
1
®
BACnet
Over ARCNET156 KBaud
Made in USA
UI-1
UI-2
12
NC
14
NO
11
COM
(A2)
(A1)
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