Johnson Controls VMA1930 Installation Manual page 2

• Required length of 3.97 mm (5/32 in.) ID
pneumatic tubing and barbed fittings
Figure 1: VMA1930 Controller wiring terminations and physical features
Table 1: VMA1930 Feature Callout Numbers and
Descriptions
Callout Physical Features: Description and References
24 VAC, Class 2 Supply Power (see
1
terminal block)
Controller Number Rotary Switches (see
2
controller number): can be numbered from 000 to 999
3 Binary Outputs, 24 VAC Triacs (see Table 3)
Configurable Outputs: Voltage Analog Output (0–10
4
VDC) and Binary Output (24 VAC Triac) (see Table 3)
5 Dual Port Fitting
Manual Override Button (see
6
about using manual override Button)
Controller Coupler (see
7
using the controller coupler )
Coupler Bolt (see
8
setting the coupler bolt )
2 VMA1930 VAV Controller Installation Guide
Supply power
Setting the
Mounting for information
Mounting for information about
Mounting for information about
VMA1930 physical features
The following figure displays the physical features
of the VMA1930, and the accompanying table
provides a description of the physical features and a
reference to further information where required.
Table 1: VMA1930 Feature Callout Numbers and
Descriptions
Callout Physical Features: Description and References
Universal Input: Voltage Analog Input (0–10 VDC)
Resistive Analog Inputs (0–600k ohm) (see Table 3):
0–2k Potentiometer
9
RTD: 1k Nickel, 1k Platinum, or A99B SI
NTC: 10K Type L (10K Johnson Controls Type II is
equivalent to Type L) or 2.252K Type II
Dry Contact Binary Input
10 SA Bus Terminal Block (see
Sensor Port (SA Bus) RJ-12 6-Pin Modular Jack (see
11
Bus port)
12 ETH2 Ethernet Port for BACnet/IP Communications
13 ETH1 Ethernet Port for BACnet/IP Communications
14 Captive Spacer and Screw
15 LED Status Indicators (see Table 7)
SA Bus terminal block)
SA