30
® 2018 Valco Companies, Inc.
WARNING!
When replacing Relays, they must be carefully ALIGNED and FULLY SEATED!
Check the load on each channel. Light groups
and tunnel fan groups will likely be your highest
amperage circuits. The relays are rated at 1HP
at 120VAC and 1½ HP at 240VAC. They will
sustain a 200 percent startup surge for up to
three seconds.
Use a contactor or divide equipment
into several groups as necessary to avoid
overloading a relay.
The
VAL-CO
®
Ventra Pro Controller has “Plug-in” RELAYS
for easy and cost effective replacement.
The fuse on the power supply is a 2.0 Amp 250VAC (5 x 20mm) fast-acting interrupting type (Littelfuse 0216002 or
equivalent).
Each output relay has a 20 Amp 3AB ceramic body slow-acting fuse (Bussmann MDA-20 or equivalent 0.25 x 1.25”).
Electrical load should be no more than 1HP at 120VAC and 1½HP at 240V.
Output Relays - What you NEED to know!
Output Channel Load Specifications
Fuse Replacement
Output Relays - Inside Base of enclosure
If there are four DIP switches at the top left corner of the Switches boards, these need to be set to the right positions
in order for the variable speed relays to work correctly. There are two possible combinations for these switches for
the right hand Switches board (channels 1 to 16):
Variable Speed Output DIP switch settings
1 and 2 OFF (down)
3 and 4 ON (up)
1 and 2 ON (up)
3 and 4 OFF (down)
The table explains the DIP switch combinations used on right hand Switches board:
CHANNELS
VARIABLE
RELAY
CHANNELS
#1 rack
type
#2 rack
type
#3 rack
type
#4 rack
type
DIP switch set-
tings on right hand
Switches board
16
7,8
Variable
Fixed
N/A
N/A
1/2 OFF, 3/4 ON
16
15,16
Fixed
Variable
N/A
N/A
1/2 ON, 3/4 OFF
16
7,8,15,16
Variable
Variable
N/A
N/A
1/2 OFF, 3/4 ON
24
7,8
Variable
Fixed
Fixed
N/A
1/2 OFF, 3/4 ON
24
15,16
Fixed
Variable
Fixed
N/A
1/2 ON, 3/4 OFF
24
7,8,15,16
Variable
Variable
Fixed
N/A
1/2 OFF, 3/4 ON
32
15,16
Fixed
Variable
Fixed
Fixed
1
/2 ON, 3/4 OFF
32
31,32
Fixed
Fixed
Fixed
Variable
1/2 ON, 3/4 OFF
32
15,16,31,32
Fixed
Variable
Fixed
Variable
1/2 ON, 3/4 OFF
If there are two Switches boards installed in the controller and the left hand Switches board (channels 17 to 32) has
these DIP switches, the DIP switches for the left hand board should always be set with 1 and 2 off (down) and 3 and 4
on (up). Note: Channel 7 and 8 can only be used as variable relays in the 16 and 24 channel controllers. There cannot
be any relays installed on the far right column in the enclosure if channels 7 and 8 are variable relays.
NOTE: If channels 7 and 8 are variable relays, DIP switches 1 and 2 are off and 3 and 4
are on. All other combinations will have DIP switches 1 and 2 on and 3 and 4 off.