DC power supply overload protection module SATEL ZB-2 protection module OUT 1.7 A 50 mA
- DC power supply output overload protection module, cuts off the OUT output when the current exceeds 1.7 A ±10%, has NC OVL 50 mA relay output.
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ZB-2 module to protect the output of a DC power supply from an overload
ZB-2 module is a protective device protecting the output of any DC power supply from overload. It is designed to work with devices that do not have their own current limiter and overload indicator.
- DC power supply output protection against overload
- OUT output cut-off current 1.7 A (±10%)
- NC type relay output overload indicator (OVL)
- Load capacity of OVL output 50 mA
- Low self-current consumption 1.5 mA (no load on OUT output)
Application of ZB-2 module
ZB-2 module is designed to protect the output of any DC power supply from the effects of overload, by automatically cutting off the output when the specified current is exceeded. It is particularly useful in installations where the devices used do not have a built-in current limiter or overload indicator.
ZB-2 works with all DC power supplies without such protection. In the SATEL offer, this module is dedicated to cooperate with, among others, expanders: CA-64 EPS, CA-64 ADR, CA-64 PP, CA-64 OPS-R, CA-64 OPS-OC and CA-64 OPS-ROC.
Protective functions and overload signaling
The key function of the ZB-2 module is to protect the power supply circuit by cutting off the OUT output when the cut-off current of 1.7 A (with ±10% tolerance) is exceeded. This reduces the risk of damage to the power supply and cooperating devices in case of short circuits or overloads in the installation.
In addition, the module is equipped with a relay output of NC type marked as OVL, which is used to signal the occurrence of an overload. The load capacity of this output is 50 mA, which allows it to cooperate, for example, with an input of the control panel in order to notify the system of irregularities in the power supply.
Technical data ZB-2
| Parameter | Value |
|---|---|
| Purpose | DC power supply output protection against overload |
| Output cut-off current OUT (±10%) | 1700 mA |
| Signaling output type | NC type relay output (OVL) |
| Load capacity of OVL output | 50 mA |
| No-load current consumption of OUT output | 1.5 mA |
| Operating temperature range | -10...+55 °C |
| Weight | 10 g |
| Designed for cooperation with, among others | CA-64 EPS, CA-64 ADR, CA-64 PP, CA-64 OPS-R, CA-64 OPS-OC, CA-64 OPS-ROC |
Technical data source:data sheet of model ZB-2 Link
FAQ - Frequently asked questions
1. What is the ZB-2 module used for?
The ZB-2 module is used to protect the output of a DC power supply from overload by cutting off the output when the set current is exceeded.
2. What is the OUT output cutoff current in ZB-2?
The cut-off current of the OUT output in the ZB-2 module is 1700 mA with a tolerance of ±10%.
3. What devices can the ZB-2 cooperate with?
ZB-2 can cooperate with any DC power supply units which do not have their own current limiter, and in the SATEL offer it is dedicated to, among others, CA-64 EPS, CA-64 ADR, CA-64 PP, CA-64 OPS-R, CA-64 OPS-OC and CA-64 OPS-ROC expanders.
4. What type is the signaling output in ZB-2?
The overload signaling output in the ZB-2 module is an NC type relay output labeled OVL.
5. What is the maximum load capacity of the OVL output?
The maximum load capacity of the OVL output is 50 mA.
6. What is the current consumption of the ZB-2 module with no load on the OUT output?
The current consumption of the ZB-2 module with no load on the OUT output is 1.5 mA.
7. In what temperature range can the ZB-2 module operate?
The ZB-2 module can work in the temperature range from -10 to +55 °C.
8. Does the ZB-2 protect only specific models of power supplies?
ZB-2 protects the output of any DC power supply that does not have its own current limiter and overload indicator.
9. Can the ZB-2 inform the control panel of an overload?
Yes, the NC type relay output (OVL) can be connected to the input of the control panel to signal the occurrence of an overload.
10. Does the ZB-2 module generate power by itself?
No, the ZB-2 module is not a power supply, but a protection element designed to work with a DC power supply.
11. Can ZB-2 be used with AC power supplies?
The description of the ZB-2 module is about protecting the output of a DC power supply, so its application applies to DC power supplies.
12. What is the main task of the OVL output in the ZB-2?
The main task of the OVL output is to signal the occurrence of an overload, so that this information can be transmitted to master devices such as the control panel.
13. Is the light weight of the ZB-2 module important for installation?
The module's weight of about 10 g facilitates its installation in alarm system housings and power supplies, without adding additional weight to the structure.
14. Is ZB-2 intended only for alarm systems SATEL?
Although the documentation indicates cooperation with selected expanders SATEL, the module can protect the output of any DC power supply that meets the current requirements.
15. Does the ZB-2 also signal an overload locally, without a control panel?
The documentation describes a relay output of NC type, which can be used both for cooperation with the control panel and other devices monitoring the overload condition.
16. What are the typical applications of expanders with which ZB-2 cooperates?
The CA-64 EPS, CA-64 ADR, CA-64 PP, CA-64 OPS-R, CA-64 OPS-OC and CA-64 OPS-ROC expanders are elements that expand the capabilities of SATEL alarm systems and may require additional power supply output protection, which is provided by ZB-2.
17. Does ZB-2 limit the continuous current at the PSU output?
The ZB-2 does not perform the function of continuous current regulation, but cuts off the OUT output when the specified cutoff current of 1.7 A is exceeded.
18. Does the ZB-2 module significantly affect the power consumption of the system?
The small current consumption of 1.5 mA with no load on the OUT output means that the effect of the ZB-2 module on the total energy consumption of the system is very small.
The ZB-2 module is a small protection device designed to protect the outputs of DC power supplies in alarm systems and other low-current installations. With a cut-off function at 1.7 A and a relay output signaling an overload, it increases the safety of powered devices.