Install Instructions

13
Series 70 Electric Actuator
Installation, Operation and Maintenance Manual
Field or Factory Installable Options
Auxiliary Switches
Auxiliary switch kits are a field or factory installable
option for all Series 70 actuators. Switch kits are
comprised of dry-contact (voltage free) SPDT mechanical
switches which are used to indicate travel position.
Switches are arranged into 2 stacks. For Actuator Size
003 - 065, stack 2 activates 3° prior to switches in
stack 1. For Actuator Size 130, 180, the switch that
activates 3° early depends on the direction of travel.
Auxiliary
Switches
Figure 15. Fixed auxiliary switches installed in a S70 actuator.
All Series 70 actuators can be fit with one set of fixed
auxiliary switches. These are a single set of switches
which activate 3° before the travel limit switches.
Adjustable auxiliary (Mid-Travel) switches can be fit
as single independent switches or in sets. If fitted as a
set, one of the switches in the set will activate 3° before
the other. Each switch set is activated independently
from other switch sets.
The maximum number and configuration of switches
depends on Actuator size and application of the Series
70 actuator. Terminal block availability due to installation
of other options may also limit the maximum number
of switches.
Switch Config.
for Modulating
Application
Actuator Size
003, 006
Actuator Size
008 thru 065
Actuator Size
130, 180
2 Limit Switches Standard Standard N/A
2 Limit, 2 Fixed 70A000-22901536 70A000-22901536 Standard
2 Limit, 2 Fixed, 1 Mid 70A006-22912536 70A012-22912536 70B180-22912536
2 Limit, 2 Fixed, 2 Mid N/A N/A N/A
2 Limit, 2 Fixed,
1 Set Mid
N/A 70A012-22914536 70B180-22914536
2 Limit, 2 Fixed,
2 Set Mid
N/A N/A N/A
Switch Config. for
On/Off Applications
Actuator Size
003, 006
Actuator Size
008 thru 065
Actuator Size
130, 180
2 Limit Switches Standard Standard N/A
2 Limit, 2 Fixed 70A000-22901536 70A000-22901536 Standard
2 Limit, 2 Fixed, 1 Mid 70A006-22902536 70A012-22902536 70B180-22902536
2 Limit, 2 Fixed, 2 Mid 70A006-22903536 70A012-22903536 70B180-22903536
2 Limit, 2 Fixed,
1 Set Mid
70A006-22904536 70A012-22904536 70B180-22904536
2 Limit, 2 Fixed,
2 Set Mid
N/A 70A012-22905536 70B180-22905536
Heater
Bray offers an optional heater as a field or factory
installable option for the Series 70 actuator to prevent
condensation from forming inside the actuator. This
PTC (Positive Temperature Coefficient) style heater
has a unique temperature - resistance characteristic.
The heater self-regulates by increasing its electrical
resistance relative to its temperature. The heater does
not require external thermostats or switches to control
its heat output.
Heater
Figure 16. Heater installed on a S70 switch plate.
NOTICE
The heater must have a constant power supply to be
effective
The heater surface can reach temperatures in excess
of 392°F [200°C].